Question

9.
Which of the following is the correct sequence
of the noble gases in their group in the
periodic table?
1) Ar, He, Kr, Ne, Rn, Xe 2) He, Ar, Ne, Kr, Xe, Rn
3) He, Ne, Kr, AE, Xe, Rn 4) He, Ne, Ar, Kr, Xe, Rn​

Answer 1

Answer:

the correct consequence of the noble gases in their group are 4 one

Answer 2

Answer:

option 4. He, Ne, Ar, Kr, Xe , Rn