Question

how will you find the valency of chlorine sulphur and magnesium.?​

Answer 1

Explanation:

I hope this will help you

Answer 2

Answer:

To calculate the valency of this element take their atomic number and then and then put them in electronic distribution and look at the outer shell how many electrons are there and what is easy for the atom to do for example to take electrons or give electrons.

Chlorine:

atomic number = 17

so it is 2,8,7

now, what is easy for the atom to do- to take one electron or give 7 electrons.

valency of chlorine = 1

Sulphur:

atomic number = 16

so it is 2,8,6

similarly, the valency of sulphur = 2

Magnesium:

atomic number = 12

so it is 2,8,2

similarly, the valency of magnesium is  2