An atomic nucleus contains
An atom consists of protons surrounding a nucleus that contains electrons and neutrons.
Select the sub-atomic particles that are present in the nucleus of an atom.
A. Electrons
B. Protons
C. Neutrons
The total number of protons and neutrons in the nucleus of an atom is called ?
Helium atom has an atomic mass of 4 u and two protons in its nucleus. How many neutrons does it have?