Question

what happens to the valence electrons and valency as we move to left to right in a period and top to bottom in a period?​

Answer 1

Answer:

As we move left to right in a period,the valence electrons increases only upto group 14 ,where it becomes 4 ,and then it decreases, i.e,in group 17 ,it becomes 1.

On moving down the group, the number of valence electrons, remains the same.