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24 June, 10:58

What information could you use to determine the atomic number of an unknown element

that has a mass number of 22?

O

A. number of ions

B. number of isotopes

C. number of neutrons

O

D. number of electrons

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Answers (2)
  1. 24 June, 11:04
    0
    The mass of an atom is based on the number of protons and neutrons in its nucleus.
  2. 24 June, 11:17
    0
    The correct answer is option C.

    Explanation:

    Atomic number (Z) = Total number of protons present in a nucleus of an atom.

    Atomic mass (M) = Sum of protons and neutrons present in the nucleus

    M = Z + Total number of neutrons

    If we are given with mass number of an element and we are said to determine the atomic number of the compound:

    22 = Z + Total number of neutrons

    Z = 22 - Total number of neutrons

    We will require total number of neutrons to determine the atomic number of an unknown element that has a mass number of 22.
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