An Atom Has 2 Protons,2 Neutrons,and 2 Electrons; It Has

Question

An atom has 2 protons,2 neutrons,and 2 electrons; it has an atomic
A) number of 6.
B) mass of 2.
C) mass of 4.
D) number of 4.

Accepted Answer

The atomic mass is the sum of the protons and neutrons, which in this case is 2+2=4. The atomic number, which is the number of protons, is 2. Therefore, the best choice is C, which states that the atom has a mass of 4.