Question

20. Which of the following statement
is true about periodic table? /
*
O O
(1) Down the group valency
increases /
O O
( (2) Valency is same in the same
group /
(3) Valency first increase down the
group then decrease /

(4) None of above /
This is a required question​

Answer 1

Explanation:

down the group of valency

Answer 2

give full ques then i will give ans