2007-09-08 13:20:06 · 5 answers · asked by 88888888 2 in Science & Mathematics ➔ Chemistry
atomic number = number of protons or number of electrons.
number of neutrons = mass number - atomic number
2007-09-08 13:25:49 · answer #1 · answered by Alex ^^ 2 · 0⤊ 1⤋
The Atomic Mass number, minus the Atomic number = The number of Neutrons in an atom.
2007-09-08 13:46:39 · answer #2 · answered by Norrie 7 · 0⤊ 0⤋
The mass number is simply the sum of the number of
protons (atomic number) and the number of neutrons
in an atom's nucleus; that is, the total nucleons in the atom.
Mathematically, we say m = p + n
To find the neutron number, just subtract the atomic
number from the total mass number. The difference is
the number of neutrons in the nucleus; that is: n = m - p
2007-09-08 13:26:13 · answer #3 · answered by Reginald 7 · 0⤊ 0⤋
An element's atomic number is the number of protons it has, while an elements mass number is its protons + neutrons. So just subtract an elements atomic number from its mass number, and the answer should be the number of neutrons.
2007-09-08 13:27:59 · answer #4 · answered by Anonymous · 0⤊ 0⤋
atomic number = number of protons
atomic mass = protons + neutrons
just subtract
2007-09-08 13:25:58 · answer #5 · answered by reb1240 7 · 0⤊ 0⤋