Question 1

1. How many electrons can the first energy level hold

Accepted Answer

2

Answer

4

Answer

6

Answer

8

Question 2

2. What does electron configuration describe?

Accepted Answer

B. The way electrons are arranged around the nucleus

Answer

A. The number of neutrons in an atom

Answer

C. The shape of the atom

Answer

D. The number of protons in an atom

Question 3

3. What is the electron configuration of oxygen (atomic number 8)?

Accepted Answer

A. 1s² 2s² 2p⁴

Answer

B. 1s² 2s² 2p⁶

Answer

C. 1s² 2s² 3p⁴

Answer

D. 1s² 2p⁶

Question 4

4. Which element has the electron configuration 1s² 2s² 2p⁶?

Accepted Answer

A. Oxygen

Answer

B. Neon

Answer

C. Nitrogen

Answer

D. Fluorine

Question 5

5. What is the maximum number of electrons in the third energy level?

Accepted Answer

C. 18

Answer

A. 8

Answer

B. 10

Answer

D. 32

Question 6

6. Which part of the atom contains electrons?

Accepted Answer

C. Electron cloud

Answer

A. Nucleus

Answer

B. Proton cloud

Answer

D. Neutron shell

Question 7

7. What do elements in the same group of the periodic table have in common?

Accepted Answer

C. Same number of valence electrons

Answer

A. Same number of neutrons

Answer

B. Same atomic mass

Answer

D. Same number of protons

Question 8

8. What is the electron configuration of sodium atom (atomic number 11)?

Accepted Answer

A. 1s² 2s² 2p⁶ 3s¹

Answer

B. 1s² 2s² 2p⁶ 3p¹

Answer

C. 1s² 2s² 2p⁶

Answer

D. 1s² 2s² 2p⁶ 3s²

Question 9

9. Which element is most stable due to a full outer shell?

Accepted Answer

C. Neon

Answer

A. Hydrogen

Answer

B. Oxygen

Answer

D. Carbon

Question 10

10. Why do atoms bond with other atoms?

Accepted Answer

D. To achieve a full outer electron shell

Answer

A. To increase their size

Answer

B. To lose all electrons

Answer

C. To become unstable

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