___________ have 4 to 8 electrons in the outermost shell.
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.
Name:
1. Three elements having a single electron in their outermost shell.
2. Three elements with filled outermost shell.
3. Three elements having 7 electrons in their outermost shell.
Which of the following element has 3 shells and have 4 electrons in the outermost shell?