2006-10-10 13:35:29 · 4 answers · asked by terry m 1 in Science & Mathematics ➔ Physics
Mass Number = Number of protons and neutrons (nucleons)
Atomic Number = Number of protons
Mass Number - Atomic Number = Number of neutrons
The Periodic Table shows the atomic mass number: Average mass number of all isotopes (varying numbers of neutrons) of an element.
2006-10-10 13:40:22 · answer #1 · answered by jackalrama 2 · 0⤊ 0⤋
The number of neutrons = mass no. - atomic no. However, the mass number given in the periodic table is not an integer because of the isotopes of the element. Each isotope will have a different no. of neutrons. If dealing with a single atom (a single isotope), the above formula is correct.
2006-10-10 20:40:14 · answer #2 · answered by gp4rts 7 · 0⤊ 0⤋
# of neutrons = atomic mass- atomic number
2006-10-10 20:38:18 · answer #3 · answered by Greg G 5 · 0⤊ 0⤋
As far as i can remember
protons= atomic number so in the
mass number= protons + neutron.
therefore mass number-atomic number = neutrons
Please dont qoute me on that.
2006-10-10 20:42:24 · answer #4 · answered by ViRgO 2 · 0⤊ 0⤋