Question

The valency of aluminum is +3 give reason​

Answer 1

Answer:

Atomic number of aluminium is 13 so its electronic configuration is 2, 8, 3. Since it has 3 electrons in its valence shell, it will lose 3 electrons to complete its octet hence its valency is +3.

Answer 2

Answer:

Since it has 3 electrons in its valence shell, it will lose 3 electrons to complete its octet hence its valency is +3.