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10. Give the mass number for an atom that has 10 protons, 10 electrons, and 11 neutrons. A. 31 B. 20 C. 10 D. 21​

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LovelyCreamviz

Question

10. Give the mass number for an atom that has 10 protons, 10 electrons, and 11 neutrons.

A. 31

B. 20

C. 10

D. 21

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Answer

  • The correct answer is: B. 20

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Cbatcaganviz

Answer:

its D

Explanation:

mass number = protons + neutrons = 10+11= 21

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