Electron Shells Flashcards
1
Q
What is the Whole of Chemistry?
A
The fact that electrons occupy ‘shells’ around the nucleus
2
Q
Electrons always what?
A
Occupy shells.
Sometimes called energy levels.
3
Q
What shells are always filled first?
A
The lowest energy levels.
The ones closest to the nucleus.
4
Q
1st shell -
2nd shell -
3rd shell -
A
2.
8.
8.
5
Q
When are atoms much happier?
A
When they have full electron shells.
Eg noble gases in group 0.
6
Q
In most atoms what happens?
A
The outer shell is not full.
Makes the atom want to react to fill it.
