Problem: Which of the following electron configurations of neutral atoms represent excited states?a. 2s2b. 1s22s22p63s23p63d2c. [Ar]4s23d3d. [Xe]6s24f1e. [Kr]5s14d5

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Ground-state – lowest state

Excited-state – higher energy state


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Problem Details

Which of the following electron configurations of neutral atoms represent excited states?

a. 2s2

b. 1s22s22p63s23p63d2

c. [Ar]4s23d3

d. [Xe]6s24f1

e. [Kr]5s14d5