Question

chemical formula of calcium chloride is cacl2
a) which atom has -1 oxidation state in cacl2
b) write the subshell electronic configuration of calcium ion
(hint:ca- atomic number - 20 )​

Answer 1

Answer:

a) chlorine has -1 oxidation state

suppose chlorine = x

CaCl2

calcium has oxidation state +2

so,

+2+2x=0

2x= -2

x= -2/2

x = -1

b) Ca= 1s^2,2s^2,2p^6,3s^2,3p^6,4s^2

= [Ar] 4s^2