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Calcium has an atomic number of 20; therefore, calcium has 20 protons protons plus neutrons shells
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4 votes
Calcium has an atomic number of 20; therefore, calcium has 20

protons
protons plus neutrons
shells

User Ursa
by
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1 Answer

5 votes

Answer:

protons

Step-by-step explanation:

Atomic number = amount of protons, Mass number = amount of protons + neutrons

User Rahil Arora
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