Question

for 50mpoints
four elements are presented by ABCD with atomic numbers 9,18, 12 and 16 respectively . identify the element
a. nature of won and formula of compound between c and d
b. having 7 Valence Electrons
c. having valency 0
d. a metal
e. among b c d which have the highest atomic size.​

Answer 1

Answer:

a)chlorine (cl)

b)florine

c)Argon

Answer 2

b.fluroine

c.argon

d.magnesium

e.argon