Fundamental Particles

The nucleus of an atom is made up of the following particles...

• photons

• electrons

• protons

• neutrons

If there are 26 protons in iron, how many neutrons would you expect there to be?

• around 40

• around 30

• around 81

• around 26

True or False: Neutrons, Protons, and electrons are ALL fundamental particles. 

• False

• True