Question

hw does valency changes in a periodic table from left to right?​

Answer 1

Answer:

valency increases first from 1 to 4 and then decreases from 4 to 1 and

then 0(group 18)

note that this is a general trend

for example P,S,Cl show 5,6,7 valency respectively

Answer 2

✔✔HEY MATE HERE IS YOUR ANSWER✅✅

On moving from left to right in a period, the number of valence electrons decreases from 8 to 1. ... The metallic character of elements increases on moving from left to right in a period. On moving from left to right in a period, the chemical reactivity of elements first decreases and then increases.

PlZz MARK AS BRAINLIST☺