Question

metal having valency +3​

Answer 1

Answer:

A non-metal which has valency three is nitrogen (N).

A non-metal which has valency three is nitrogen (N).The electronic arrangement of nitrogen is (2,5) hence to complete its octet it needs three electrons hence its valency is 3.

Answer 2

Answer:

Boron, Aluminum, Phosphorus, Chlorine, Scandium, Titanium, Vanadium, Chromium, Manganese, Iron, Cobalt, Nickel, Copper etc........