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cupcaakefired345
cupcaakefired345 cupcaakefired345
  • 16-12-2016
  • History
Answered

the mass number of an element is equal to

Athe total number of electrons
Bthe sum of the protons and neutrons
Cless than twice the atomic number
Da constant number for the lighter elements

Verified Answer :

delmars
delmars delmars
  • 16-12-2016
BThe sum of the protons and neutrons.
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