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Mass number of an elements is the sum of the number of...............and..............​

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User Treetey
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2 Answers

4 votes
protons and neutrons
answered
User Mlbright
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1 vote

Answer:

Step-by-step explanation:

The sum of the number of protons and neutrons in the nucleus is called the mass number of the isotope. The most common carbon atoms have six protons and six neutrons in their nuclei.

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User Darajan
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