Question

how does the valency vary in a period of long form of periodic table​

Answer 1

$\huge\sf\underline{\red{Answer}}$

Q:-how does the valency vary in a period of long form of periodic table

Ans:- In the periodic table period, the valency of an element first increases and then decreases. ... The valency varies from +1 to +4 or -4 through these 8 elements, in the first 4 elements of these 8 elements. The valency varies from -3 to -1 from the 5th element to the 7th element of these 8 elements.

$\huge\sf\underline{\pink{Thanks}}$