Question

an element has Z is equal to 12 and a is equal to 26 draw a diagram showing the distribution of electrons in the orbits what is the valency of element and why? if this element X combined with another element Y whose electronic configuration 2, 8, 7 what will be the formula of the compound thus formed? state how did you arrived to this formula?

Answer 1

Z=12

A=26

Mg'Z=12

Orbits= K(2), L(8), M(2)

Valency= 2

Group No.=2

Block= s

Mg+S=MgS, (S's velocity is 2

MgCl2