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andreyandreev [35.5K]
3 years ago
5

How is the mass number calculated for an element

Chemistry
2 answers:
scoundrel [369]3 years ago
8 0
Mass number=Atomic number+ number of neutrons. Hope it helps
Anon25 [30]3 years ago
3 0
Find the number of protons and neutrons of that element and add them together. You might need periodic table. Hope it helps.
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