Which particles are found in the nucleus of an atom?
What charge does an electron have?
What charge does a neutron have?
Which particle orbits around the nucleus?
Who is known as the father of the atomic theory?
Which particle has the smallest mass?
What do you call atoms of the same element with different numbers of neutrons?
What does the atomic number represent?
What does the mass number of an atom represent?
Who discovered the neutron?