Electron Shells Flashcards
(5 cards)
1
Q
Electrons always occupy what?
A
Energy levels
2
Q
Name two facts about the lowest energy levels
A
They are the closest to the nucleus and are always filled first
3
Q
What are the maximum amount of electrons allowed in each shell?
A
1st: 2 2nd: 8 3rd: 8
4
Q
Why do most atoms want to react?
A
Because their outer shell is not full and this makes them want to fill it
5
Q
How many electrons does Hydrogen have?
A
One
