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The mass number of an element is equal to a) the total number of electrons B) the sum of the protons and neutrons C) less than twice the atomic number D) a constant number for t…

The mass number of an element is equal to a) the total number of electrons B) the sum of the protons and neutrons C) less than twice the atomic number D) a constant number for t…
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3 votes
The mass number of an element is equal to

a) the total number of electrons
B) the sum of the protons and neutrons
C) less than twice the atomic number
D) a constant number for the lighter elements

asked
User Jason Plank
by
8.1k points

1 Answer

5 votes
B. The sum of the protons and neutrons. 
answered
User DolceVita
by
8.1k points
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