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2 February, 07:54

Element A has 15 protons. Determine the number of neutrons in its isotope with mass number 33.

A) 15

B) 18

C) 33

D) 48

the answer is B your welcome

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Answers (1)
  1. 2 February, 08:02
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    In an electrically neuteral atom, number of protons = number of electrons = atomic number.

    Mass number = neutrons + protons/electrons/atomic number

    Therefore,

    neutrons = mass number - protons/electrons/atomic number

    Neutrons = 33 - 15 = 18

    The answer is thus B. But this is the solution and explanation along with it as proof.
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