Chemistry, 12.11.2019 07:31, cwsmith8026

The mass number of an element is equal to
a. the total number of electrons in the nucleus
b. the total number of protons and neutrons in the nucleus
c. less than twice the atomic number
d. a constant number for the lighter elements

Answers: 1

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The mass number of an element is equal to
a. the total number of electrons in the nucleus