Question

scientific formula for finding mass number
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Answer 1

Answer: number of protons+ number of neutrons=mass number

Explanation:

Together, the number of protons and the number of neutrons determine an element's mass number. Since an element's isotopes have slightly different mass numbers, the atomic mass is calculated by obtaining the mean of the mass numbers for its isotopes.

Answer 2

$\huge\mathcal{\red {\underline {\overline {\mid {\pink {Protons+neutrons}}\mid}}}}$