Question

give reason
element belonging to thesame
group have the same valency​

Answer 1

Answer:

Elements in same group show same valency because they have same number of electrons in ther outermost shell i.e. Valence shell. Since valency depends upon the valence electrons so they have same valency. Elements in the same group have same valancy.

Answer 2

Explanation:

becaz it shows same no.of electrons in a valence shell.......