maribel81 maribel81
  • 27-10-2016
  • Physics
contestada

what is the mass number of atoms with 5 protons and 7 neutrons?

Respuesta :

precalculus
precalculus precalculus
  • 27-10-2016
the mass number of the atoms equal to the mass number of the nuclear.
the mass number of nuclear equal to the sum of proton and neutron
the mass of a proton nearly the same as a neutron
the answer is 12
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