Question 1

What is the electron configuration of the oxygen atom?

Accepted Answer

1s² 2s² 2p⁴

Answer

1s² 2s² 2p³

Answer

1s² 2s¹ 2p⁵

Answer

1s² 2s² 2p⁶

Question 2

Which of the following represents the electron configuration for sodium (Na)?

Accepted Answer

1s² 2s² 2p⁶ 3s¹

Answer

1s² 2s² 3s²

Answer

1s² 2s² 2p⁶ 3s²

Answer

1s² 2s² 2p⁶ 3p¹

Question 3

What is the electron configuration for the element chlorine (Cl)?

Accepted Answer

1s² 2s² 2p⁶ 3s² 3p⁵

Answer

1s² 2s² 2p⁶ 3p⁶

Answer

1s² 2s² 2p⁶ 3s² 3p⁴

Answer

1s² 2s¹ 2p⁶ 3s²

Question 4

What is the correct electron configuration for the noble gas argon (Ar)?

Accepted Answer

1s² 2s² 2p⁶ 3s² 3p⁶

Answer

1s² 2s² 2p⁶ 3s² 4s²

Answer

1s² 2s² 2p⁶ 3p⁵

Answer

1s² 2s² 2p⁶ 3s² 3p⁴

Question 5

Which of the following is the correct electron configuration for a nitrogen atom (N)?

Accepted Answer

1s² 2s² 2p³

Answer

1s² 2s² 3s¹

Answer

1s² 2s² 2p²

Answer

1s² 2s¹ 2p⁴

Question 6

What is the electron configuration for the element silicon (Si)?

Accepted Answer

1s² 2s² 2p⁶ 3s² 3p²

Answer

1s² 2s² 2p⁶ 3s² 3p³

Answer

1s² 2s² 2p⁶ 3p⁴

Answer

1s² 2s² 2p⁶ 4s²

Question 7

What is the correct electron configuration for the element iron (Fe)?

Accepted Answer

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶

Answer

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 4d²

Answer

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁴

Answer

1s² 2s² 2p⁶ 3s² 3p⁶ 4p²

Question 8

What is the electron configuration of the element copper (Cu)?

Accepted Answer

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰

Answer

1s² 2s² 2p⁶ 3s² 3p⁶ 4p²

Answer

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁹

Answer

1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d⁹

Question 9

Which of the following represents the correct electron configuration for the element bromine (Br)?

Accepted Answer

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁵

Answer

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 4p⁴

Answer

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p²

Answer

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁹

Question 10

What is the correct electron configuration for the element lithium (Li)?

Accepted Answer

1s² 2s¹

Answer

1s² 2s²

Answer

1s¹ 2s²

Answer

1s² 2p¹

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