Question

Name one ion for each of the valency + 1 + 2 and + 3

Answer 1

Sodium has valency +1. It is Na+.
Because it donates one valence electron for octet configuration.

Calcium has valency +2. It is Ca2+.
Because it donates two valence electrons for octet configuration.

Ferric has valency +3. It is Fe3+.
Because it donates three valence electrons for octet configuration.

Thanks.
Hope this helps you!!!

Answer 2

Answer:

sodium=+1

magnesium=+2

aluminum=+3