Question

Which equation is true of an atom with no elctrical charge

A. Number of nutrons = number of protons
B. Number of electrons = number of neutrons
C. Number of neutrons = number of protons + number of electrons
D. Number of electrons = number of protons

Answer 1

Atoms are composed of electrons (charge -1), protons (charge +1), and neutrons (no charge). So in a neutral atom the correct answer is "D".