The Number of Protons in the Nucleus of an Atom

Question

The number of protons in the nucleus of an atom is indicated by the
A)atomic mass
B)atomic number
C)molecular formula
D)atomic weight
E)valence number

Accepted Answer

The atomic number represents the number of protons in the nucleus of an atom. It is also what determines the identity of the element as each element has a unique number of protons.