Identifying Polyatomic Ions Formulas

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Quizzes Created: 5 | Total Attempts: 4,120

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SO₄^2-
- Sulfite
- Sulfate
- Sulfide
- Sulfoxide
- Sulfur

About This Quiz

This quiz tests to see if you can identify the formulas of a polyatomic ions. Select the answer choice with the correct name of the given formula.

Identifying Polyatomic Ions Formulas - Quiz

Quiz Preview

2.

C₂H₃O₂^1-
- Acetate
- Azide
- Glucose
- Formate
- Hydrogen carbonate
Correct Answer

A. Acetate

Explanation

The correct answer is acetate because the formula C2H3O21- corresponds to the acetate ion. Acetate is a negatively charged ion that is derived from acetic acid. It is commonly found in vinegar and is used in various chemical reactions and organic synthesis.

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3.

OH^1-
- Hydride
- Hydrogen oxide
- Hydrate
- Hydroxide
- Hydrite
Correct Answer

A. Hydroxide

Explanation

The correct answer is hydroxide because OH1- is the chemical formula for hydroxide ion. The hydroxide ion consists of one oxygen atom and one hydrogen atom, and it has a negative charge. It is commonly found in many chemical compounds and is known for its basic properties.

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4.

PO₄^3-
- Phosphate
- Phosphite
- Phosphide
- Hypophosphate
- Hyperphosphate
Correct Answer

A. Phosphate

Explanation

The correct answer is phosphate because the chemical formula "PO43-" represents a polyatomic ion called phosphate. Phosphate is a compound that contains one phosphorus atom bonded to four oxygen atoms. It is commonly found in biological systems and plays a crucial role in processes such as DNA and RNA synthesis, energy transfer, and bone formation.

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5.

SO₄^2-
- Sulfite
- Sulfate
- Sulfide
- Sulfoxide
- Sulfur
Correct Answer

A. Sulfate

Explanation

Sulfate (SO42-) is the correct answer because it is the ion formed when sulfuric acid (H2SO4) dissociates in water. It consists of one sulfur atom bonded to four oxygen atoms, with a charge of -2. Sulfate is commonly found in minerals and salts, and it is an important component in many biological processes.

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6.

C₂H₃O₂^1-
- Acetate
- Azide
- Glucose
- Formate
- Hydrogen carbonate
Correct Answer

A. Acetate

Explanation

The correct answer is acetate. Acetate is a negatively charged ion with the chemical formula C2H3O2-. It is commonly found in vinegar and is used in various chemical reactions and industrial processes. Acetate ions are also important in biological systems, as they are involved in the metabolism of carbohydrates and fatty acids.

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7.

PO₄^3-
- Phosphate
- Phosphite
- Phosphide
- Hypophosphate
- Hyperphosphate
Correct Answer

A. Phosphate

Explanation

Phosphate is the correct answer because it is the ion formed by the element phosphorus when it gains three oxygen atoms. The suffix "-ate" is used to indicate the presence of oxygen in the ion. Phosphite, on the other hand, is the ion formed when phosphorus gains two oxygen atoms and is represented by the suffix "-ite". Phosphide is the ion formed when phosphorus gains three electrons to achieve a stable octet configuration. Hypophosphate and hyperphosphate are not valid ions in the context of phosphorus and oxygen combinations.

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8.

What is another name for bicarbonate?

Correct Answer
hydrogen carbonate

Explanation
Bicarbonate is another name for hydrogen carbonate. The term "bicarbonate" refers to the chemical compound HCO3-, which consists of one hydrogen atom, one carbon atom, and three oxygen atoms. This compound is commonly found in many substances, including baking soda and antacids. Therefore, hydrogen carbonate is an alternative name for bicarbonate.

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1
9.

What is another name for bicarbonate?

Correct Answer
hydrogen carbonate

Explanation
Bicarbonate is another name for hydrogen carbonate.

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10.

OH^1-
- Hydride
- Hydrogen oxide
- Hydrate
- Hydroxide
- Hydrite
Correct Answer

A. Hydroxide

Explanation

The correct answer is hydroxide because OH1- represents the hydroxide ion. The hydroxide ion consists of one oxygen atom bonded with one hydrogen atom and carries a charge of -1. It is commonly found in compounds such as sodium hydroxide (NaOH) and calcium hydroxide (Ca(OH)2), which are strong bases.

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11.

MnO₄^1-
- Permanganate
- Periodate
- Manganate
- Manganide
- Manganite
Correct Answer

A. Permanganate

Explanation

The correct answer is permanganate. The suffix "-ate" indicates that the compound contains oxygen and has a higher oxidation state for the central atom (in this case, Mn). Permanganate is a polyatomic ion with the formula MnO4-, where Mn has a +7 oxidation state. This ion is commonly found in compounds such as potassium permanganate, which is used as an oxidizing agent in various chemical reactions.

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12.

MnO₄^1-
- Permanganate
- Periodate
- Manganate
- Manganide
- Manganite
Correct Answer

A. Permanganate

Explanation

The correct answer is permanganate. The name "permanganate" is derived from the prefix "per-" which indicates a higher oxidation state of manganese compared to other compounds listed. The "-ate" suffix indicates that it is an anion, and the presence of the number "4" in the formula indicates that the oxidation state of manganese in this compound is +7. Therefore, permanganate is the correct answer.

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13.

NH₄¹⁺
- Ammonia
- Acetate
- Azide
- Hydrogen nitride
- Ammonium
Correct Answer

A. Ammonium

Explanation

The correct answer is "ammonium" because NH4+ is the chemical formula for ammonium. Ammonium is a positively charged ion that is formed when ammonia (NH3) gains a hydrogen ion (H+). It is commonly found in compounds such as ammonium chloride and ammonium nitrate.

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14.

CN^1-
- Cyanate
- Cyanide
- Carbon nitride
- Azide
- Thiocyanate
Correct Answer

A. Cyanide

Explanation

Cyanide is the correct answer because it is the only option that is a compound consisting of a carbon atom bonded to a nitrogen atom with a triple bond. The other options, cyanate, carbon nitride, azide, and thiocyanate, have different chemical compositions and structures.

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15.

NH₄¹⁺
- Ammonia
- Acetate
- Azide
- Hydrogen nitride
- Ammonium
Correct Answer

A. Ammonium

Explanation

The correct answer is "ammonium" because NH41+ refers to the ammonium ion. It is formed when ammonia (NH3) accepts a proton (H+) to become NH4+. The ammonium ion is a positively charged polyatomic ion that is commonly found in various compounds and salts, such as ammonium acetate and ammonium azide.

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16.

CN^1-
- Cyanate
- Cyanide
- Carbon nitride
- Azide
- Thiocyanate
Correct Answer

A. Cyanide

Explanation

Cyanide is the correct answer because it is the only option that is a specific chemical compound. The other options, cyanate, carbon nitride, azide, and thiocyanate, are all general terms or categories of compounds. Cyanide, on the other hand, refers to a specific compound that contains a carbon atom triple-bonded to a nitrogen atom.

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17.

NO₂^1-
- Nitrogen oxide
- Nitride
- Nitrite
- Nitrate
- Nitroxide
Correct Answer

A. Nitrite

Explanation

Nitrite is the correct answer because it is a compound that contains nitrogen and oxygen. It is formed when nitrogen oxide reacts with water. Nitrite is commonly used as a preservative in food and is also present in fertilizers.

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18.

Cr₂O₇^2-
- Chromate
- Dichromate
- Oxalate
- Carbonate
- Chromium
Correct Answer

A. Dichromate

Explanation

The correct answer is dichromate. The Cr2O72- ion is commonly known as dichromate. It consists of two chromium atoms bonded to seven oxygen atoms. The prefix "di-" indicates that there are two chromium atoms present in the ion. The suffix "-ate" indicates that the ion is a negatively charged polyatomic ion. The dichromate ion is commonly used in various chemical reactions and is an important reagent in analytical chemistry.

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19.

CrO₄^2-
- Chromate
- Dichromate
- Chromium
- Oxalate
- Carbonate
Correct Answer

A. Chromate

Explanation

The correct answer is chromate because the CrO42- ion is known as the chromate ion. It consists of one chromium atom bonded to four oxygen atoms. The chromate ion is commonly found in various chemical compounds and is used in a variety of industrial applications, such as in the production of pigments and dyes.

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20.

HPO₄^2-
- Phosphite
- Phosphate
- Hypophosphite
- Perphosphate
- Hydrogen phosphate
Correct Answer

A. Hydrogen phosphate

Explanation

The correct answer is hydrogen phosphate because HPO42- is the formula for the hydrogen phosphate ion. In this ion, there is one hydrogen atom bonded to a phosphate group, which consists of one phosphorus atom and four oxygen atoms. The hydrogen phosphate ion is commonly found in various chemical compounds and is an important component in biological systems, such as in the regulation of pH in the human body.

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21.

BrO₃^1-
- Borate
- Boride
- Bromate
- Bromide
- Boroxide
Correct Answer

A. Bromate

Explanation

The correct answer is bromate because the suffix "-ate" indicates that the compound contains oxygen and the element bromine.

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22.

NO₃^1-
- Nitrite
- Nitride
- Nitrate
- Nitroxide
- Nitrogen
Correct Answer

A. Nitrate

Explanation

Nitrate is the correct answer because it is the only option that matches the given list of words. The other options, nitrite, nitride, nitroxide, and nitrogen, do not match any of the words provided.

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23.

NO₂^1-
- Nitrogen oxide
- Nitride
- Nitrite
- Nitrate
- Nitroxide
Correct Answer

A. Nitrite

Explanation

Nitrite is the correct answer because it is a compound that contains nitrogen and oxygen. It is formed when nitrogen dioxide reacts with water, and it is commonly used as a food preservative and in the production of fertilizers. Nitrite is also found naturally in the environment and can be produced by bacteria in soil and water.

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24.

Cr₂O₇^2-
- Chromate
- Dichromate
- Oxalate
- Carbonate
- Chromium
Correct Answer

A. Dichromate

Explanation

The correct answer is dichromate. Cr2O72- is the chemical formula for dichromate ion. It is a polyatomic ion that consists of two chromium atoms bonded to seven oxygen atoms. The suffix "-ate" indicates that the ion has a negative charge. Dichromate ions are commonly used in various chemical reactions and are known for their bright orange color.

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25.

What is another way of writing CH₃COO^1-?

Correct Answer
C2H3O21-, Acetate ion, acetate

Explanation
The correct answer is C2H3O21-, acetate. This is because CH3COO1- is the chemical formula for the acetate ion, which is commonly referred to as acetate. The C2H3O2 represents the molecular formula of the acetate ion, while the 1- indicates that the ion has a negative charge of -1. Therefore, C2H3O21- and acetate are alternate ways of representing the same chemical species.

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0
26.

ClO₃^1-
- Perchlorate
- Hypochlorite
- Chlorate
- Chlorite
- Chloride
Correct Answer

A. Chlorate

Explanation

The correct answer is chlorate because the ClO3- ion is known as the chlorate ion. It is formed by the combination of a chlorine atom and three oxygen atoms. The -ate suffix indicates that the ion has a higher oxidation state compared to the chloride ion, which has a -1 charge.

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27.

CrO₄^2-
- Chromate
- Dichromate
- Chromium
- Oxalate
- Carbonate
Correct Answer

A. Chromate

Explanation

The correct answer is "chromate" because CrO42- is the chemical formula for the chromate ion. The chromate ion consists of one chromium atom bonded to four oxygen atoms. It is commonly found in compounds such as potassium chromate and sodium chromate.

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28.

HPO₄^2-
- Phosphite
- Phosphate
- Hypophosphite
- Perphosphate
- Hydrogen phosphate
Correct Answer

A. Hydrogen phosphate

Explanation

The correct answer is "hydrogen phosphate" because HPO42- is the chemical formula for hydrogen phosphate. It is an ion that consists of one hydrogen atom bonded to a phosphate ion, which is composed of one phosphorus atom and four oxygen atoms. Hydrogen phosphate is commonly found in various chemical compounds and plays important roles in biological processes such as DNA and RNA synthesis.

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29.

S₂O₃^2-
- Sulfate
- Sulfite
- Thiosulfate
- Oxalate
- Dichromate
Correct Answer

A. Thiosulfate

Explanation

Thiosulfate is the correct answer because the formula S2O32- corresponds to the thiosulfate ion. This ion is composed of two sulfur atoms (S) bonded to three oxygen atoms (O) and carries a charge of -2. Thiosulfate is commonly used in various chemical processes, such as in photography as a fixing agent and in medicine as an antidote for cyanide poisoning.

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30.

BrO₃^1-
- Borate
- Boride
- Bromate
- Bromide
- Boroxide
Correct Answer

A. Bromate

Explanation

The correct answer is bromate because the suffix "-ate" indicates that the compound contains oxygen. Bromate is a polyatomic ion that consists of bromine and oxygen. The other options, borate, boride, bromide, and boroxide, do not contain oxygen.

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31.

What is another way of writing CH₃COO^1-?

Correct Answer
C2H3O21-
acetate

Explanation
The correct answer is C2H3O21-, acetate. This is another way of representing the CH3COO1- ion, which is commonly known as acetate. The formula C2H3O21- indicates that there are two carbon atoms, three hydrogen atoms, two oxygen atoms, and one negative charge in the acetate ion. Therefore, C2H3O21- is the correct alternative representation for CH3COO1-.

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2
32.

NO₃^1-
- Nitrite
- Nitride
- Nitrate
- Nitroxide
- Nitrogen
Correct Answer

A. Nitrate

Explanation

Nitrate is the correct answer because it is a compound that contains nitrogen and oxygen. It is formed when nitrogen reacts with oxygen, and it is commonly found in fertilizers and explosives. Nitrate ions are also present in many foods and can be converted to nitrite in the body. Nitrate is an important source of nitrogen for plants and is essential for their growth.

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33.

S₂O₃^2-
- Sulfate
- Sulfite
- Thiosulfate
- Oxalate
- Dichromate
Correct Answer

A. Thiosulfate

Explanation

Thiosulfate (S2O32-) is the correct answer because it is the only option that matches the given chemical formula. Sulfate (SO42-), sulfite (SO32-), oxalate (C2O42-), and dichromate (Cr2O72-) all have different chemical formulas and do not match the given formula.

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34.

ClO₃^1-
- Perchlorate
- Hypochlorite
- Chlorate
- Chlorite
- Chloride
Correct Answer

A. Chlorate

Explanation

The correct answer is chlorate because the suffix "-ate" indicates that the compound contains oxygen. In this case, the prefix "chlor-" suggests that the compound contains chlorine. Therefore, "chlorate" is the appropriate name for ClO3-.

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35.

ClO₂^1-
- Perchlorate
- Chlorate
- Chlorite
- Hypochlorite
- Chloride
Correct Answer

A. Chlorite

Explanation

The correct answer is chlorite. The ClO21- ion is called chlorite. It is a polyatomic ion that consists of one chlorine atom and two oxygen atoms. The suffix "-ite" indicates that it has one less oxygen atom than the chlorate ion (ClO31-).

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36.

ClO₂^1-
- Perchlorate
- Chlorate
- Chlorite
- Hypochlorite
- Chloride
Correct Answer

A. Chlorite

Explanation

The correct answer is chlorite. The given chemical formula ClO21- indicates that it is an anion with a negative charge. Among the options provided, chlorite is the only one that matches this formula. Chlorite is a polyatomic ion with the formula ClO2-, and it is commonly found in various chemical compounds and minerals.

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37.

IO₃^1-
- Iodate
- Iodide
- Iodite
- Ioxalate
- Iodine
Correct Answer

A. Iodate
38.

O₂^2-
- Oxide
- Oxygen
- Peroxydase
- Oxalate
- Peroxide
Correct Answer

A. Peroxide

Explanation

The correct answer is "peroxide" because it is the only word in the given options that ends with "oxide".

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39.

IO₃^1-
- Iodate
- Iodide
- Iodite
- Ioxalate
- Iodine
Correct Answer

A. Iodate

Explanation

Iodate is the correct answer because it is the only option that is a compound containing iodine. Iodide is a single iodine ion, iodite is a compound containing iodine but with a different oxidation state, ioxalate does not contain iodine, and iodine is a pure element. Therefore, iodate is the only option that fits the given criteria.

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40.

ClO₄^1-
- Perchlorate
- Chlorate
- Chlorite
- Hypochlorite
- Chloride
Correct Answer

A. Perchlorate

Explanation

The correct answer is perchlorate because the prefix "per-" indicates that there is one more oxygen atom in the compound compared to chlorate. Therefore, ClO41- refers to perchlorate.

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41.

ClO₄^1-
- Perchlorate
- Chlorate
- Chlorite
- Hypochlorite
- Chloride
Correct Answer

A. Perchlorate

Explanation

The correct answer is perchlorate. Perchlorate is a polyatomic ion composed of one chlorine atom and four oxygen atoms. It has a -1 charge, indicated by the "-1" in the ClO41- formula. The prefix "per-" indicates that it has one more oxygen atom than the chlorate ion (ClO31-). The other options, chlorate, chlorite, hypochlorite, and chloride, have different numbers of oxygen atoms or different charges, making them incorrect choices.

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42.

SO₃^2-
- Sulfite
- Sulfate
- Sulfur
- Sulfide
- Sulfoxide
Correct Answer

A. Sulfite

Explanation

Sulfite is the correct answer because it is an anion with a charge of -2. It is derived from sulfuric acid and is commonly found in compounds such as sodium sulfite and potassium sulfite. Sulfite is often used as a preservative in food and beverages, and it is also used in the production of paper and textiles.

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43.

O₂^2-
- Oxide
- Oxygen
- Peroxydase
- Oxalate
- Peroxide
Correct Answer

A. Peroxide

Explanation

The given answer "peroxide" is correct because it is the only word in the list that matches the given pattern "O22-". The other words do not have the same chemical formula or charge as peroxide.

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44.

SCN^1-
- Cyanate
- Thiocyanate
- Thiosulfate
- Sulfur carbon nitride
- Dichromate
Correct Answer

A. Thiocyanate

Explanation

Thiocyanate is the correct answer because it is the only option that matches the given chemical names. Cyanate, thiosulfate, and dichromate are all different compounds, while sulfur carbon nitride is a compound made up of sulfur, carbon, and nitrogen atoms. Thiocyanate, on the other hand, is a compound that consists of a sulfur atom bonded to a carbon atom, which is then bonded to a nitrogen atom.

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45.

SO₃^2-
- Sulfite
- Sulfate
- Sulfur
- Sulfide
- Sulfoxide
Correct Answer

A. Sulfite

Explanation

The correct answer is "sulfite." Sulfite is a polyatomic ion with a charge of -2. It is formed when sulfur dioxide (SO2) reacts with water, and it is commonly used as a preservative in food and beverages. Sulfite compounds are also used in various industrial processes and as reducing agents in chemical reactions.

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46.

SCN^1-
- Cyanate
- Thiocyanate
- Thiosulfate
- Sulfur carbon nitride
- Dichromate
Correct Answer

A. Thiocyanate

Explanation

Thiocyanate is the correct answer because it is the only option that is a compound consisting of sulfur, carbon, and nitrogen. Cyanate, thiosulfate, and dichromate are all compounds that do not contain sulfur, carbon, and nitrogen together. Sulfur carbon nitride is not a recognized compound. Therefore, thiocyanate is the only option that fits the given criteria.

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47.

ClO^1-
- Perchlorate
- Chlorate
- Chlorite
- Hypochlorite
- Chloride
Correct Answer

A. Hypochlorite

Explanation

The given formula, ClO1-, corresponds to the hypochlorite ion. This is because the ion has a negative charge of -1, indicated by the superscript 1-. The prefix "hypo-" indicates that the ion has one less oxygen atom compared to the chlorate ion (ClO3-). Therefore, the correct answer is hypochlorite.

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48.

ClO^1-
- Perchlorate
- Chlorate
- Chlorite
- Hypochlorite
- Chloride
Correct Answer

A. Hypochlorite

Explanation

The correct answer is hypochlorite. The ClO1- ion is known as hypochlorite. It is a negatively charged ion that consists of one chlorine atom and one oxygen atom. Hypochlorite is commonly found in bleach and is used as a disinfectant and oxidizing agent. It is also used in water treatment and as a bleaching agent in the textile industry.

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49.

BO₃^3-
- Bromate
- Boride
- Borate
- Borite
- Bromide
Correct Answer

A. Borate

Explanation

The correct answer is "borate" because it is the only option that matches the given term "BO33-". The term "BO33-" suggests that it is an anion with a charge of -3. Among the given options, only "borate" contains the element boron (B) and has a charge of -3, making it the appropriate choice.

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Quiz Edited by
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Jun 14, 2010

Quiz Created by
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Identifying Polyatomic Ions Formulas

SO42-

Quiz Preview

C2H3O21-

OH1-

PO43-

SO42-

C2H3O21-

PO43-

What is another name for bicarbonate?

What is another name for bicarbonate?

OH1-

MnO41-

MnO41-

NH41+

CN1-

NH41+

CN1-

NO21-

Cr2O72-

CrO42-

HPO42-

BrO31-

NO31-

NO21-

Cr2O72-

What is another way of writing CH3COO1-?

ClO31-

CrO42-

HPO42-

S2O32-

BrO31-

What is another way of writing CH3COO1-?

NO31-

S2O32-

ClO31-

ClO21-

ClO21-

IO31-

O22-

IO31-

ClO41-

ClO41-

SO32-

O22-

SCN1-

SO32-

SCN1-

ClO1-

ClO1-

BO33-

SO₄^2-

C₂H₃O₂^1-

OH^1-

PO₄^3-

SO₄^2-

C₂H₃O₂^1-

PO₄^3-

OH^1-

MnO₄^1-

MnO₄^1-

NH₄¹⁺

CN^1-

NH₄¹⁺

CN^1-

NO₂^1-

Cr₂O₇^2-

CrO₄^2-

HPO₄^2-

BrO₃^1-

NO₃^1-

NO₂^1-

Cr₂O₇^2-

What is another way of writing CH₃COO^1-?

ClO₃^1-

CrO₄^2-

HPO₄^2-

S₂O₃^2-

BrO₃^1-

What is another way of writing CH₃COO^1-?

NO₃^1-

S₂O₃^2-

ClO₃^1-

ClO₂^1-

ClO₂^1-

IO₃^1-

O₂^2-

IO₃^1-

ClO₄^1-

ClO₄^1-

SO₃^2-

O₂^2-

SCN^1-

SO₃^2-

SCN^1-

ClO^1-

ClO^1-

BO₃^3-