Question

what is the valency of element how to u diverse valency of aluminium​

Answer 1

the valency means the no.of electron in any element to complete its octet for being stable

valency of Al is 3

hope it will help you

Answer 2

valence electrons can be found easily by seeing the left out electrons in the outer most shell hydrogen ful group is 1 group 2 is (beryllium) 2 group 13(boron) is 3 group 14(carbon) is 4 group 15 (nitrogen) is 3 group 16(oxygen) is 2 group 17 (fluorine) is 1 group 18(helium) noble gases is() 0 so aluminum belongs to 13th group so valency is 3