Question

10.Group III A elements have...................... electron in outermost shell. *​

Answer 1

Answer:

3rd group Elements have 3valancy electrons(outer most electrons) in outer most shell

Answer 2

Answer:

Explanation:

(i) All the elements in a group have the same number

of electrons in the outermost shell. Therefore,

down the group, valency remains the same.

(ii) Valency of group 1 elements is 1 and that of group

2 elements is 2.

(iii) The valency of group 18 elements is zero because

they are noble gases with completed outermost

shell.