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Answer 1 · 2016-03-01T19:34:05

The electron configuration of $"N"$ is $"[He]"color(white)(l) 2s^2 2p^3$ .

Nitrogen, $"N"$ , is located in Group 15, Row 2 of the Periodic Table.

This tells you that a neutral nitrogen atom has a total of $7$ electrons.

If you add electrons according to the Aufbau Principle, you get the electron configuration

$"N: " 1s^2color(white)(l) 2s^2 2p^3$

If you use the noble gas shorthand notation, you will get from

$"N: " overbrace(1s^2)^(["He"]) 2s^2 2p^3$

to

$"N: " ["He"]color(white)(l) 2s^2 2p^3$