Question

Plzzz answer the question fastly
I mark as brainlist !!!!!!!​

Answer 1

atomic no-8

atomic mass-18

valence electron-6

valency-(-2)

x is non metal

Answer 2

atomic number = number of proton = 8
atomic mass = number of electron + number of proton = 10+8= 18u
valence electron = 6
velency of x = 8-6=2
x should be non metal beacuse there are six valence electron hence it take more elctron so it is non metal