25
QuizMultiple Choice

Atoms and the Periodic Table — Test

Question 25 • Chemistry

To show the electron configuration for an atom, when would it be better to use an orbital notation than to use a written configuration with numbers, letters, and superscripts?

Answer
A
when the aim is to show orbital shapes in subshells
B
when the aim is to use less space
C
when the aim is to show electron spins
D
when the aim is to show electron distributions in shells

Explanation

Orbital notation uses boxes or lines for orbitals and arrows for electrons, so it shows each electron’s spin as up or down. A written configuration such as 1s² 2s² does not show the spins of individual electrons. Therefore, orbital notation is better when the aim is to show electron spins.

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