Question

A neutral atom has an atomic number of 14 and a mass number of 30, how many protons, neutrons, and electrons are found within the atom?. . 30 protons, 14 electrons, and 30 neutrons. . 14 protons, 14 electrons, and 16 neutrons. . 14 protons, 16 electrons, and 16 neutrons. . 30 protons, 30 electrons, and 14 neutrons

Answer 1

Mass Number = 30

Atomic Number = 14 = Protons.

P + N = 30
14 + N = 30, N = 30 - 14 = 16

14 protons, 14 electrons, and 16 neutrons

Answer 2

The mass number of an atom is the sum of the number of its proton and neutron. Its atomic number is the number of its proton. Thus, the number of neutrons 30 - 14  = 16. If the atom is neutral, the number of electron is equal to the number of proton. Thus, the answer is the third choice.