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# The ion of an element has 3 positive charges. Mass number of the atom is 27 and the number of neutrons is 14. What is the number of electrons in the ion?- 13
- 10
- 14
- 16

**Correct Answer:**(b) 10

**Explanation:**Mass number of the element = 27

Number of neutrons = 14

Number of protons = mass number – number of neutrons

= 27 – 14 = 13

As the ion of this element has 3 positive charges, it means that it has lost 3 electrons. Therefore, there are 10 electrons in the ion.

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