# Periodic Table MCQ Quiz Questions And Answers

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Questions: 22 | Attempts: 38,980  Settings  Take our Periodic table MCQ quiz to test your knowledge of the elements and their positions respective to each other. This quiz is made up of 22 multiple choice questions and 1 fill-in-the-blank question. All questions are related to the periodic table and are designed in a way so as to allow us to calculate your final result based on your selected answers. Don't forget to share this quiz with your friends!

• 1.

### How many element groups are there?

• A.

7

• B.

11

• C.

16

• D.

18

• E.

26

D. 18
Explanation
There are 18 element groups.

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• 2.

### Who is the creator of the periodic table?

• A.

Dimitri Mendeleev

• B.

Henry Moseley

A. Dimitri Mendeleev
Explanation
Dimitri Mendeleev is credited as the creator of the periodic table. He was a Russian chemist who organized the elements based on their atomic weight and properties. Mendeleev's periodic table arranged the elements in rows and columns, leaving gaps for undiscovered elements and predicting their properties. His work laid the foundation for the modern periodic table that we use today.

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• 3.

### _______________discovered the number of protons in the nucleus of each atom.

Henry Moseley
Explanation
Henry Moseley discovered the number of protons in the nucleus of each atom. This discovery was made through his experiments with X-ray spectroscopy. Moseley observed that the X-ray spectra of different elements shifted in a predictable manner when subjected to an electric field. He realized that this shift was directly related to the atomic number of the element, which is the same as the number of protons in the nucleus. Moseley's work led to the concept of atomic numbers and the organization of the periodic table based on these numbers.

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• 4.

### The symbol Au stands for what element?

• A.

Gold

• B.

Silver

• C.

Copper

• D.

Tin

A. Gold
Explanation
The symbol Au is the chemical symbol for gold.

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• 5.

### What is the atomic number for helium?

• A.

1

• B.

2

• C.

4

• D.

8

B. 2
Explanation
The atomic number represents the number of protons in the nucleus of an atom. In the case of helium, it has an atomic number of 2, indicating that it has 2 protons.

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• 6.

### What is the symbol for tin?

• A.

Sn

• B.

Se

• C.

Sg

• D.

Sr

A. Sn
Explanation
The symbol for tin is Sn.

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• 7.

### What is the atomic number for the element tantalum?

• A.

22

• B.

81

• C.

52

• D.

73

D. 73
Explanation
The atomic number of an element represents the number of protons in the nucleus of an atom. In this case, the element is tantalum, and its atomic number is 73.

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• 8.

### What is the symbol for Argon?

• A.

A

• B.

An

• C.

Ag

• D.

Ar

D. Ar
Explanation
The correct symbol for Argon is Ar. Argon is a chemical element with the atomic number 18 and is a noble gas. Its symbol "Ar" is derived from the first two letters of its name. Argon is colorless, odorless, and tasteless, making it a commonly used gas for various applications, such as filling light bulbs and as a shielding gas in welding.

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• 9.

### What is the atomic number for beryllium?

• A.

83

• B.

4

• C.

35

• D.

5

B. 4
Explanation
Beryllium is a chemical element with the symbol Be and atomic number 4. The atomic number represents the number of protons in the nucleus of an atom. Since beryllium has an atomic number of 4, it means that it has 4 protons. Therefore, the correct answer is 4.

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• 10.

### The element germanium is in what element group?

• A.

Basic Metal

• B.

Non-Metal

• C.

Rare Earth

• D.

Semi-Metal

D. Semi-Metal
Explanation
Germanium is classified as a semi-metal because it possesses properties of both metals and non-metals. It has a metallic luster and conducts electricity like a metal, but it is also brittle and behaves as a non-metal in certain chemical reactions. Therefore, it falls into the category of semi-metals or metalloids, which are elements that exhibit intermediate characteristics between metals and non-metals.

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• 11.

### The element Rubidium is in what element group?

• A.

Alkaline earth

• B.

Basic metal

• C.

Alkali metal

• D.

Transition metal

C. Alkali metal
Explanation
Rubidium belongs to the alkali metal group. Alkali metals are highly reactive and have only one valence electron, making them very reactive and easily losing that electron to form a positive ion. Rubidium, like other alkali metals, exhibits similar properties such as low melting and boiling points, softness, and high reactivity with water and air. Therefore, the correct answer is alkali metal.

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• 12.

### What is the atomic number for cesium?

• A.

20

• B.

48

• C.

6

• D.

55

D. 55
Explanation
The atomic number of an element represents the number of protons in the nucleus of its atom. In this case, the correct answer is 55 because cesium (Cs) has an atomic number of 55. This means that a cesium atom contains 55 protons in its nucleus.

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• 13.

### What is the symbol for ruthenium?

• A.

Rn

• B.

Ru

• C.

Rh

• D.

Rf

B. Ru
Explanation
The symbol for ruthenium is Ru.

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• 14.

### What is the symbol for manganese?

• A.

Mo

• B.

Mg

• C.

Mt

• D.

Mn

D. Mn
Explanation
The symbol for manganese is Mn.

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• 15.

### What is the symbol for phosphorus?

• A.

Po

• B.

P

• C.

Pb

• D.

Pu

B. P
Explanation
The symbol for phosphorus is P.

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• 16.

### The symbol Fe stands for which element?

• A.

Francium

• B.

Fluorine

• C.

Iodine

• D.

Iron

D. Iron
Explanation
The symbol Fe is used to represent the element Iron in the periodic table.

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• 17.

### The element neon is from what group?

• A.

Halogen

• B.

Rare Earth

• C.

Noble Gas

• D.

Non-Metal

C. Noble Gas
Explanation
Neon belongs to the noble gas group because it possesses a full outer electron shell, making it stable and unreactive. Noble gases are known for their low reactivity and high stability due to their full valence electron shells. Neon, along with other noble gases like helium, argon, krypton, xenon, and radon, does not readily form compounds with other elements.

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• 18.

### What is the atomic weight of copper?

• A.

58.9332

• B.

63.546

• C.

51.9961

• D.

40.078

B. 63.546
Explanation
The atomic weight of copper is 63.546. This value represents the average mass of an atom of copper, taking into account the different isotopes and their abundance. The atomic weight is calculated by multiplying the atomic mass of each isotope by its relative abundance and summing up these values. In the case of copper, the most abundant isotope is copper-63, which has an atomic mass of approximately 63.546 amu. Therefore, the atomic weight of copper is 63.546.

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• 19.

### What is the atomic mass for Nitrogen?

• A.

14

• B.

22

• C.

7

• D.

28

A. 14
Explanation
The atomic mass for Nitrogen is 14. This is because the atomic mass of an element is the weighted average mass of all its isotopes, taking into account the abundance of each isotope. Nitrogen has two main isotopes: Nitrogen-14 and Nitrogen-15. Nitrogen-14 is the most abundant isotope, making up about 99.6% of natural nitrogen. Nitrogen-15 is less abundant. By calculating the weighted average of these isotopes, we arrive at an atomic mass of 14 for Nitrogen.

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• 20.

### What is the atomic number for Nitrogen?

• A.

3

• B.

14

• C.

7

• D.

22

C. 7
Explanation
The atomic number of an element represents the number of protons in the nucleus of an atom. In the case of Nitrogen, the atomic number is 7, which means that a nitrogen atom has 7 protons. This number is unique to nitrogen and helps to identify and classify the element.

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• 21.

### Which element is the most abundant element in the universe?

• A.

Oxygen

• B.

Silicon

• C.

Hydrogen

• D.

Hellium

C. Hydrogen
Explanation
Hydrogen is the most abundant element in the universe because it is the primary constituent of stars and makes up about 75% of the elemental mass in the universe. It is also a key component of water and many organic compounds, making it essential for life as we know it.

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• 22.

### Hydrogen has 1 proton, 1 electron, 0 neutrons.

• A.

True

• B.

False Back to top