Can electrons leave their shells freely ?
If we give or take energy to an electron can it jump to a higher shell or to lower shell leaving it's own position
(a) How many electrons do inert gases have in their valence shells?
(b) Name an element of group 18 which can form compounds.
Name
(a) three elements that have a single electron in their outermost shells.
(b) two elements that have two electrons in their outermost shells.
(c) three elements with filled outermost shells.