neon

fluorine

magnesium

argon

Fluorine

Neon

Chlorine

Argon

C

B

N

O

C

B

N

O

Both arrows in the 2p box should be pointing up

There is nothing incorrect with this diagram

In the 2p box there should only be 1 electron in the first 2p box and one in the 2nd 2p box

All the arrows should be pointing up.