Electron Configuration Worksheet Page 2

C – S

ART

TABILITY

1. Write the shorthand electron configuration for copper.

Symbol

# e

Shorthand Electron Configuration

[Ar]5s

2. Explain why copper does not follow the expected pattern.

The filled d sublevel is a stable configuration, so the electrons leave s2 empty in order to fill the

d sublevel.

Use the concept of full shell stability to predict the ions that will form from the following atoms.

Then, name the isoelectronic noble gas and give the shorthand electron configuration for the

ion (not the original atom).

Ion

Noble

Atom

# e-

Shorthand Electron Configuration of Ion

Symbol

Gas

[Ar]4s

[He]2s

[Ne]3s

[He]2s

Stability & Electron Configuration – Ch. 4

CHEM

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