1g5 Remediation Electron Configuration for Ions

1g5 Remediation

Electron Configuration for Ions​

Multiple Choice

What is the charge of an atom that has gained one electron?

• -1
• -2
• +1
• +2

Multiple Choice

Which electron configuration belongs to a Chloride (Cl^-) ion?

• 1s² 2s² 2p⁶ 3s² 3p⁵

• 1s² 2s² 2p⁶ 3s² 3p⁶

• 1s² 2s² 2p⁶ 3s² 3p⁷

• 1s² 2s² 2p⁶ 3p⁷

Multiple Choice

What electron configuration matches an oxygen ion?

• 1s²2s²2p⁶3s2, 3p⁶4s²3d¹⁰4p⁵
• 1s²2s²2p⁴
• 1s²2s²2p⁶
• 1s²2s²2p⁶3s²3p⁶4s²3d¹

Multiple Choice

An aluminium ion would have which electron configuration?

• 1s² 2s² 2p⁶ 3s²

• 1s² 2s² 2p⁶ 3s² 3p¹

• 1s² 2s² 2p⁶ 3s² 3p⁶

• 1s² 2s² 2p⁶

Multiple Choice

When Zinc becomes an ion, it loses its electrons from the ____ orbital.

• 1s

• 4s

• 3d

• 3p

Fill in the Blanks

Write the electronic configuration for Cr³⁺.

Multiple Choice

Which of the following is the ground-state configuration of a negative ion of a halogen?

• 1s²2s²2p⁵3s²3p⁵
  
• 1s²2s²2p⁶3s²3p⁶
• 1s²2s²2p⁶2d¹⁰3s²3p⁶
• 1s²2s²2p⁶3s²3p⁶3d⁵