Question

the electronic configuration of chlorine is
a ) 2,7
b) 2,8,7
c) 2,8
d) 2,8,1​

Answer 1

Answer:

b 2,8,7

Explanation:

the first layer can only contain 2 electrons. 2&3 layers can hold 8 electrons. atomic no of chlorine is 17 so we get 2,8,7