E- configuration 2022

Multiple Choice

In which group and period is an element that has the following electron configuration?

1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p³

• Period 1

  Group 3

• Period 4

  Group 3

• Period 4

  Group 5

• Period 3

  Group 3

Multiple Choice

According to Aufbau, which of the following orbitals is filled first?

• 4d

• 5s

• 4f

• 5p

Multiple Select

Which of the following has a full d subshell? Select all that apply

• Zn

• Zn²⁺

• Cu

• Cu²⁺

Multiple Choice

Which orbital is displayed correctly?

• A

• B

• C

• D

Multiple Choice

Which electron configuration shows a violation of Hund's Rule?

• A only

• A, B and C

• C and A

• D

Multiple Choice

How many half-filled orbitals would silicon contain?

• 0
• 2
• 1
• 3

Multiple Choice

How many electrons can fit in the 3rd energy level?

• 8

• 2
• 32

• 18

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 is the electron configuration of ₂₉Cu?

• 1s2 2s2 2p6 3s2 3p6 4s2 3d10

• 1s2 2s2 2p6 3s2 3p6 4s2 3d9

• 1s2 2s2 2p6 3s2 3p6 4s1 3d10

• 1s2 2s2 2p6 3s2 3p6 3d10 4s1

Multiple Select

Which of the following atoms or ions have 3 unpaired electrons?

• P

• $$S^+$$  

• B

• C

Multiple Select

Which of the following atoms have a half full s subshell?

• Li

• Cu

• Zn

• Zn⁺

Multiple Choice

Which of the following electron configurations represent a chemically unreactive element?

• 1s²2s²

• 1s²2s²2p⁶

• 1s²2s²2p⁶3s²

• 1s²2s²2p⁶3s²3p64s²3d¹⁰

Fill in the Blanks

Write the symbol of the element that has electron configuration [Rn]7s²5f¹⁴6d³

Fill in the Blanks

How many electrons are contained in the the highest occupied energy level of Br?