Question

Which matter smaller than electron proton and newtron

Answer 1

quarks is the smaller of electron proton neutron

Answer 2

An atom has 32 fundamental particles including electrons, protons and neutrons (discovered till now).

Quark particles i.e., protons and neutrons

Leptons particles i.e., electrons

Bosons, fermions etc.

Except electron, proton and neutron all remain are smaller.