Question

The electrons present in the valence shell of a noble gas atom can be:
(a) 8 only
(b) 2 only
(c) 8 or 2
(d) 8 or 4

Answer 1

(c) 8 or 2

Helium is the only noble gas that has 2 electrons in its valence shell. Other noble gases have 8 electrons in their valence shells.