How many neutrons in one atom of zinc?

Answer 1

There are 30 protons and 35 neutrons.

This is true of the isotope Zinc-65 only. This isotope is produced synthetically. There are a total of seven zinc isotopes, five of which occur naturally and two that are synthesized.

64Zn has 34 neutrons

65Zn has 35 neutrons and is synthetic

66Zn has 36 neutrons

67Zn has 37 neutrons

68Zn has 38 neutrons

70Zn has 40 neutrons

72Zn has 42 neutrons and is synthetic

Answer 2

All atoms of zinc contain 30 protons, but the number of neutrons in an atom may vary. Atoms with the same number of protons but different numbers of neutrons are called "isotopes." The most common isotope of zinc is Zn-64, which has 34 neutrons. Other naturally occurring isotopes of zinc may have 35, 36, 37, or 39 neutrons.

Answer 3

Zinc has 30 protons. There are several isotopes of which contain 32, 33, 34, 35, 36, 37, 38, 39. 40 or 42 neutrons.

The average number of neutrons is taken to be 35.