Question

Which non metal exhibits variable valencies 3 and 5​

Answer 1

Answer:

Transition metals nickel, copper, tin and iron exhibit variable valency. Nonmetals such as nitrogen and oxygen also show variable valency.

Hope this answer is helpful for you.

Answer 2

plz mark me as brainlist

Explanation:

Phosphorus is the non-metal which catches fire easily, so it has to be stored under water and show +3 and +5 valencies.