Protons

Location

• Protons are found in the nucleus of an atom.
• They’re found alongside the neutrons.

Charge

• Protons have a positive charge.
• Their charge relative to other subatomic particles is .

Mass

• The atomic mass of a proton is 1.
• This is (almost) the same as the mass of a neutron, which is also 1.
• It is much larger than an electron.

Electrons in an atom

• Atoms have equal numbers of protons and electrons
  • That’s because atoms, unlike ions, are neutral overall.