Question

The position of three elements A, B and C in the
roup 1 Group 17
A
B
С
1) State whether A is a metal or non-metal.
ii) What type of ion is formed by C.
1) State the valency of B.
iv) State the number of valence electrons in
rons
its​

Answer 1

Explanation:

I) A is a non metal since it belongs to group 7

II) ions formed by C is negative

valency of B is -1

no of valence electrons is 7