name 3 element which have completely filled outermost shell. write their common name and justify it

Q. (a) Name three elements that have a single electron in their outermost shells.
(b) Name two elements that have two electrons in their outermost shells.
(c) Name three elements with completely filled outermost shells.

Q. Question 3 (c)
Name three elements with filled outermost shells.

Q. Why are some elements chemically inert?

Q. Question 3 (b)
Name two elements that have two electrons in their outermost shell