Question

Name two elements in single outer most of shell two electrons fulfilled outermost shell

Answer 1

Answer:

Explanation:

The duet rule of the first shell applies to H, He,Li and Be—the noble gas helium has two electrons in its outer shell, which is very stable. (Since there is no 1p subshell, 1s is followed immediately by 2s, and thus shell 1 can only have at most 2 valence electrons).