Polyatomic Ions Symbol Quiz!

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Questions: 19 | Attempts: 506

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Polyatomic Ions Symbol Quiz! - Quiz

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Questions and Answers
  • 1. 

    Ammonium

    Explanation
    The given correct answer NH4+1 represents the chemical formula for ammonium. Ammonium is a positively charged ion that consists of one nitrogen atom (N) and four hydrogen atoms (H). The +1 charge indicates that the ion has one more proton than electrons, giving it a positive charge. This ion is commonly found in various compounds and is important in biological and chemical processes.

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  • 2. 

    Acetate

    Explanation
    The given answer, C2H3O2-1, represents the acetate ion. Acetate is a negatively charged ion formed when acetic acid, CH3COOH, loses a hydrogen ion. The formula C2H3O2-1 indicates that there are two carbon atoms, three hydrogen atoms, and two oxygen atoms in the acetate ion, with a charge of -1. This ion is commonly found in many compounds and is involved in various chemical reactions.

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  • 3. 

    Chlorate

    Explanation
    Chlorate (ClO3-1) is an anion that consists of one chlorine atom bonded to three oxygen atoms. The -1 charge indicates that the anion has gained one electron, giving it a negative charge. Chlorate is a common polyatomic ion that is often found in compounds such as sodium chlorate (NaClO3) and potassium chlorate (KClO3). It is used in various industries, including as an oxidizing agent in the production of explosives and as a component in disinfectants and herbicides.

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  • 4. 

    Perchlorate

    Explanation
    The answer ClO4-1 is correct because it represents the chemical formula for perchlorate. Perchlorate is an ion that consists of one chlorine atom bonded to four oxygen atoms, with a charge of -1. The -1 charge is indicated by the superscript on the right side of the formula. Therefore, ClO4-1 accurately represents the composition and charge of the perchlorate ion.

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  • 5. 

    Cyanide

    Explanation
    The correct answer is CN-1 because cyanide is a chemical compound consisting of one carbon atom (C) and one nitrogen atom (N), with a negative charge (-1) indicated by the superscript. The -1 charge is due to the extra electron present in the compound, making it negatively charged.

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  • 6. 

    Hydroxide

    Explanation
    The correct answer is OH-1 because hydroxide is a negatively charged ion with a charge of -1. The OH-1 ion consists of one oxygen atom and one hydrogen atom. The negative charge is due to the extra electron on the oxygen atom, resulting in a net charge of -1.

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  • 7. 

    Nitrite

    Explanation
    Nitrite is represented by the chemical formula NO2-1. The -1 in the formula indicates that nitrite carries a negative charge, meaning it has gained one electron. The NO2-1 ion consists of one nitrogen atom bonded to two oxygen atoms. This ion is commonly found in various chemical compounds and is often used as a preservative in food.

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  • 8. 

    Nitrate

    Explanation
    Nitrate (NO3-1) is an anion that consists of one nitrogen atom and three oxygen atoms. It has a charge of -1, indicated by the superscript -1. Nitrate is commonly found in fertilizers and is an important nutrient for plants. It can also be present in water sources, and high levels of nitrate in drinking water can be harmful to human health, especially for infants.

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  • 9. 

    Permanganate

    Explanation
    The given answer "MnO4-1" is the correct formula for permanganate. Permanganate is an ion with a charge of -1, indicated by the superscript -1 in the formula. The symbol "Mn" represents the element manganese, and the combination of "O4" indicates that there are four oxygen atoms bonded to the manganese atom. Therefore, the correct answer is MnO4-1.

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  • 10. 

    Carbonate

    Explanation
    The correct answer is CO3-2 because carbonate (CO3-2) is a polyatomic ion that consists of one carbon atom bonded to three oxygen atoms. The -2 charge indicates that the ion has gained two electrons, giving it a negative charge. This ion is commonly found in compounds such as calcium carbonate (CaCO3) and sodium carbonate (Na2CO3).

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  • 11. 

    Chromate

    Explanation
    Chromate is a polyatomic ion with a chemical formula of CrO4-2. The -2 charge indicates that it has gained two electrons, making it negatively charged. The CrO4-2 ion consists of one chromium atom bonded to four oxygen atoms. This ion is commonly found in chemical compounds and is often used in industrial processes.

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  • 12. 

    Dichromate

    Explanation
    The given answer, Cr2O7-2, is the chemical formula for dichromate ion. Dichromate ion consists of two chromium atoms bonded to seven oxygen atoms, with a charge of -2. This ion is commonly found in various chemical compounds and is known for its bright orange color. It is often used as an oxidizing agent in chemical reactions.

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  • 13. 

    Sulfite

    Explanation
    The correct answer is SO3-2 because sulfite is a polyatomic ion with a charge of -2. The chemical formula for sulfite is SO3-2, indicating that it consists of one sulfur atom bonded to three oxygen atoms, and the overall charge of the ion is -2.

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  • 14. 

    Sulfate

    Explanation
    Sulfate is represented by the chemical formula SO4-2. The -2 superscript indicates that the sulfate ion has a charge of -2. This means that it has gained two electrons, giving it a negative charge. The sulfate ion is formed when sulfuric acid (H2SO4) dissociates in water, releasing the hydrogen ions (H+) and leaving behind the sulfate ions (SO4-2). Sulfate ions are commonly found in compounds such as gypsum, Epsom salts, and various sulfates of metals. They play important roles in biological processes and are often involved in chemical reactions.

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  • 15. 

    Phosphate

    Explanation
    The given answer "PO4-3" is the chemical formula for phosphate. Phosphate is an inorganic chemical compound that consists of one phosphorus atom bonded to four oxygen atoms. The "-3" superscript indicates that the phosphate ion has a charge of -3, meaning it has gained three electrons. This charge allows phosphate to form various salts and compounds, and it plays an essential role in biological processes such as DNA and RNA synthesis, energy transfer, and bone formation.

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  • 16. 

    Hydrogen carbonate/ bicarbonate

    Explanation
    The answer is HCO3-1 because hydrogen carbonate or bicarbonate is represented by the HCO3-1 ion. The -1 superscript indicates that the ion carries a single negative charge. Hydrogen carbonate is an important ion in chemistry and is involved in various chemical reactions, such as in the buffering system of the blood to maintain pH balance.

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  • 17. 

    Hydrogen sulfate/ bisulfate

    Explanation
    The correct answer is HSO4-1 because it represents the hydrogen sulfate or bisulfate ion. This ion has a negative charge of -1 and consists of one hydrogen atom bonded to a sulfate or bisulfate group. The HSO4-1 ion is formed when a hydrogen atom replaces one of the oxygen atoms in the sulfate ion (SO4-2). It is commonly found in acidic solutions and is an important component in many chemical reactions.

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  • 18. 

    Hydrogen phosphate

    Explanation
    Hydrogen phosphate, represented by the chemical formula HPO4-2, is an anion that consists of one hydrogen atom and four oxygen atoms. The negative charge on the ion indicates that it has gained two extra electrons. This ion is formed when one hydrogen atom in the phosphate ion (PO4-3) is replaced by another negative ion or molecule. The hydrogen phosphate ion is commonly found in various chemical and biological processes, including the regulation of pH in biological systems.

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  • 19. 

    Dihydrogen phosphate

    Explanation
    The given correct answer, H2PO4-1, represents the dihydrogen phosphate ion. This ion consists of two hydrogen atoms (H2), one phosphorus atom (P), and four oxygen atoms (O4), with a charge of -1. The -1 charge indicates that the ion has gained one electron, making it negatively charged. Dihydrogen phosphate is an important compound in chemistry and biochemistry, often found in biological systems and used as a buffering agent.

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