(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.

6 views

1 Answers

(a) Lithium, Sodium, Potassium .

(b) Magnesium, Calcium .

(c) Helium, Neon, Argon .

6 views