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Identify the mass number of an ion with 20 protons, 22 neutrons, and 18 electrons.
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Identify the mass number of an ion with 20 protons, 22 neutrons, and 18 electrons.

User Ratul Sharker
by
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1 Answer

3 votes

Answer:

42

Step-by-step explanation:

Relative mass = number of protons + number of neutrons

Relative mass = 20 + 22

Relative mass = 42

User Jlbriggs
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