Question

Elements having same valence electrons are placed in same group but there is an exception

with
A)He B)Ar

C)Ne d)Xe​

Answer 1

Answer:

what is this

Explanation:

d) xe plzzzzzzz bro follow me

Answer 2

There is an exception with He.

• He, Ne, Xe and Ar are noble gases. This is also called inert gas. They reside in the same group of modern periodic tables.
• Ne, Xe and Ar have the same number of valance electrons. The valance electrons in these elements are 8.
• He has 2 valence electrons.
• Hence the correct option is A.