Question

group number and valency has no realtion in A group 18 B Group 1 C group 15 D group 17​

Answer 1

Answer:

what you want in this question

Answer 2

hey,

Answer:

A group 18

Explanation:

in group 18 inert gases are present which has valency equal to zero.

group 1 elements belong to s - block and have valency equal to 1 . {valency = group no.}

similarly group 2 elements also belong to s block and have valency 2 .

group 15 and 17 belong to p-block and have valency 5 and 7 respectively i.e.  valency = group no - 10.

inspite of  being in p-block group 18 elements have valency equal to 0 hence its group no has no relation with valency.

hope it helps!