Question

Which atom contains only two fundamental particles? what are they?

Answer 1

Atom is very, very small particle of any element.
Proton, electron and neutron are present in Atom.
Atom has a nucleus is situated in center. Proton and neutron is present in nucleus. Electrons are around energy shell name K,L,M,N.

Answer 2

Answer:

Quarks and lepston.....................