Back to Chemistry

Structure of an atom
Electron
Neutrons
Protons
Nucleus
Relative mass of particles
Atomic number
Mass number
Atomic number and mass number
The periodic table has no charge
Hydrogen
Isotopes
Electron shells
Electron shells and 2, 8, 8
Ions
Valency
Relative atomic mass and relative formula mass

Feedback

Nucleus

The nucleus is very small but heavy and is found in the middle of an atom. It contains a number of protons and neutrons. Because it contains protons, it is positively charged.

A nucleus is the centre structure of an atom and contains protons and neutrons which gives the nucleus a positive charge — Think of a group of newts (neutrons) playing basketball with a group of peas (protons). You can't play with an electronic robot (electron) because they are too accurate. So the only ones playing in the middle of the game are the newts and the peas.

More Info