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Identify the neutral element represented by this excited-state electron configuration, then write the ground-state electron configuration for that element.

Excited State: 1s2 2s2 2p2 3s1

Element Symbol: ?

Ground State: ?

3 answers

# electrons = 7 (count them) which means 7 protons which means element #7 in the periodic table.
Now write the ground state for N.

N
1s2 2s2 2p3

1S2 2S2 2P3
N (Nitrogen)

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