Which of the following particles are present in the nucleus of a helium atom?
Neutrons
Protons
Both protons & neutrons
Electrons
Select the sub-atomic particles that are present in the nucleus of an atom.
A. Electrons
B. Protons
C. Neutrons
Nucleus contains the three subatomic particles: electrons, protons and neutrons.
Helium atom has an atomic mass of 4 units and 2 protons in its nucleus. How many neutrons are present in its nucleus?
Does an alphaparticle has electrons or the nucleus of helium is made of only protons and neutrons