Which One of the Following Statements About Atoms and Subatomic

Multiple Choice

Which one of the following statements about atoms and subatomic particles is correct?

A) Rutherford discovered the atomic nucleus by bombarding gold foil with electrons.
B) The proton and the neutron have identical masses.
C) The neutron's mass is equal to that of a proton plus an electron.
D) A neutral atom contains equal numbers of protons and electrons.
E) An atomic nucleus contains equal numbers of protons and neutrons.