How many valence electrons do noble gases have?

1 or 2

2 or 8

2 or 3

8

Enzymes affect the reactions in living cells by changing the

Light waves can move through , but they travel fastest when they move through a(n) .

The atom fluorine generally will become stable through the formation of an ionic chemical compound by accepting electron(s) from another atom. this process will fill its outer energy level of electrons.