Simple as that. The nucleus has both neutrons and protons. Simple stuff isn't it. Those little dot things surrounding it are the electrons. How adorabubble.
You need to know a few things about these.
Nucleus:
- MIDDLE of the atom.
- Not the left, not the right but the middle.
- Positive charge.
- Nearly all of mass in the atom.
Electrons:
- Orbit the nucleus. ( . ) Like that. That's right... laugh at the boob, hilarious.
- Negative charge.
- Size of orbit determines how big the atom is.
- VIRTUALLY NO MASS. Bit like some of those models you see nowadays... Disgusting.
Number of protons equals number of electrons.
Learn this table, it's vital:
You learnt it? Well you should have done.
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