Question

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

Question 3 options:

A)

[Ar]

B)

[He]

C)

[H]

D)

[Ne]

Answer 1

N means nitrogen

Lets look at the EC

`\\ \sf\bull\longmapsto 1s^22s^22p^3`

• -3 means it has got 3 electrons

`\\ \sf\bull\longmapsto 1s^22s^22p^6`

`\\ \sf\bull\longmapsto [Ne]`