Which of the following is the correct sequence of the noble gases in their in the periodic table ?

Options

A. Ar, He, Kr, Ne, Rn, Xe
B. He, Ar, Ne, Kr, Xe, Rn
C. He, Ne, Kr, Ar, Xe, Rn
D. He, Ne, Ar, Kr, Xe, Rn.

Answer

D

Explanation

Correct sequence of noble gases (down the group) is He, Ne, Ar, Kr, Xn, Rn.