Question

the electrons configuration of an electrons x is 2,8,8. to which group and periodic table and x belong give reason (ìi)state its valency and justify your answer

Answer 1

hey sakna here

the element is argon

in group 18

period 3

valency 0

Answer 2

Actually the element is magnesium. It belongs to 3rd group. It's valency is 2.