Question

What's the electron configuration of an N-3 ion?

Question 3 options:

A)

[Ar]

B)

[He]

C)

[H]

D)

[Ne]

Answer 1

B) He

Explanation:

This ion has gained 3 valence electrons, meaning it is a full octet or all 8 valence electrons in its outer most shell

The only atom there that is a noble gas or full octet is He or Helium

Answer 2

[He] 2s2 2p3
this would be the answer, so i’m going to infer from the choices that it is [He]