English

Mass number is ______.

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Question

Mass number is ______.

Options

  • number of protons

  • number of electrons

  • number of protons + number of neutrons

  • none of the above

MCQ
Fill in the Blanks
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Solution

Mass number is number of protons + number of neutrons.

Explanation:

Almost 100% of an atom's weight resides inside its central core, which is calculated strictly as the sum of protons and neutrons.

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Chapter 1: Periodic Properties and Variations of Properties - Intext Question [Page 16]

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Lakhmir Singh Chemistry [English] Class 10 ICSE
Chapter 1 Periodic Properties and Variations of Properties
Intext Question | Q 3. (ii) | Page 16
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