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ChemistryChemistry
30 July, 02:41

The atomic mass of an atom in atomic mass units is approximately equal to the number of which subatomic particles in the atom?

A. neutrons and protons

B. protons and electrons

C. electrons and neutrons

D. neutrons, protons, and electrons

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Answers (2)
  1. 30 July, 05:01
    0
    A. Neutrons and Protons
  2. 30 July, 05:01
    0
    Answer: The correct answer is Option A.

    Explanation:

    Mass number is defined as the sum of number of protons and number of neutrons present in an atom. It is represented as A.

    A = Mass number = Number of protons + Number of neutrons

    For Example: Taking potassium element

    Number of protons = 19

    Number of neutrons = 20

    Number of electrons = 19

    Thus, the mass number of potassium element = 20 + 19 = 39

    Hence, the correct answer is Option A.
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Home » Chemistry » The atomic mass of an atom in atomic mass units is approximately equal to the number of which subatomic particles in the atom? A. neutrons and protons B. protons and electrons C. electrons and neutrons D. neutrons, protons, and electrons
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