Question

valency of elements....... in a period from left to right

Answer 1

valency of the element going in a period from left to right it increase by 1 electron

hope it's help u

Answer 2

Hey dear,

● Answer -
First increases then decreases

● Valency -
- It is the combining power of an element
- It's measured by the number of hydrogen atoms it can displace or combine with.

● Trend of valency in a period -
- On moving from left to right in a period, the number of valence electrons decreases from 8 to 1.
- As a result, valency across a period first increases and then decreases.
- Valency increases from +1, +2, +3 till +4 in a period and then decreases -4, -3, -2, -1, 0.

Hope this helps you...