The gold-foil experiment
When Rutherford discovered the positive charge in an atom was concentrated in the nucleus, the neutron had yet to be discovered. There are no neutrons in Rutherford's model.
A short answer for the Rutherford atomic model: the atom is composed from a central part - a nucleus, positively charged, surrounded by electrons - very small negative charged particles.
rutherford
Rutherford.
Ernest Rutherford
Rutherford
Ernest Rutherford was the man you are thinking of. He was the first person to 'split the atom'.
The gold-foil experiment
split the atom
rutherford
The nuclear atom was discovered by Ernest Rutherford. He did it with a gold foil experiment.
When Rutherford discovered the positive charge in an atom was concentrated in the nucleus, the neutron had yet to be discovered. There are no neutrons in Rutherford's model.
Rutherford's experiment was important because it showed that an atom is mostly empty space. Rutherford gave more detail of the atom's structure.
Rutherford discovered in the early 1900s that most of an atom's mass is located in its nucleus.
Rutherford imagined the atom to be a particle with a thickly concentrated positive nucleus and electrons moving around it.
Rutherford discovered that atoms are mostly empty space except for the nucleus at the center of the atom.