Chapter 2 Atomic Structure 3rd Hour

Multiple Choice

How many valence electrons are found in an atom with an electron configuration 1s² 2s² 2p⁶ 3s ² 3p⁵?

• 3

• 5

• 7

• 17

Multiple Choice

How many valence electrons does Chlorine have? (Z=17) 1s²2s²2p⁶3s²3p⁵

• 5

• 2

• 7

• 5

Multiple Choice

Which rule is violated in the following orbital diagrams?

• Hund's Rule

• Aufbau Principle

• Pauli's Exclusion Principle

Multiple Choice

Select the electronic configuration that violates the Hund's rule

• A

• B

• C

• D

Multiple Choice

Identify the rule that is being violated

• Aufbau's Principle

• Hund's Rule

• Pauli's Exclusion Principle

• Heisenberg uncertainty principle

Multiple Choice

Which one of the following is the electronic configuration of the bromine atom? (Z=35)

• 1s²2s²2p⁶3s²3p⁶3d¹⁰4s¹4p⁶

• 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁷

• 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁵

• 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶

Multiple Choice

What electron configuration matches an oxygen ion? (Z=8)

• 1s²2s²2p⁶3s2, 3p⁶4s²3d¹⁰4p⁵

• 1s²2s²2p⁴

• 1s²2s²2p⁶

• 1s²2s²2p⁶3s²3p⁶4s²3d¹

Multiple Choice

How many unpaired electrons are there in the Vanadium atom (Z: 23)

• 3

• 4

• 5

• 6

Multiple Choice

Which electron configuration belongs to Copper (Cu)? (Z=29)

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁸

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁹

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰

• 1s² 2s² 2p⁶ 3s² 3p⁶ 4s¹ 3d¹⁰