How you can determine the number of neutrons an atom has from an atom's mass number and its atomic number?
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Answer:
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.
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Other answers
# of neutrons = atomic mass- atomic number
Greg G
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.
gp4rts
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.
ViRgO
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