Mohan Batra
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Poll

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?

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Poll Results

50%(a) 13 ( 1 voter )
50% (b) 10 ( 1 voter )
0% (c) 14
0%(d) 16
Based On 2 Votes

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Non-metals like fluorine (F), chlorine (Cl), and bromine (Br), which gain one electron to form negative ions (anions).
Thus, elements with valency 1 are not always metals or non-metals but can be either.
Class 9th Science NCERT MCQ Questions
NCERT Books MCQ Questions Session 2024-2025.

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1 Answer

  1. (b) Element with mass number 27 is Al. It has the atomic number equal to 13.
    Number of protons in Al atom = 13.
    Number of electrons in Al atom = 13.
    Number of electrons in Al³+ = 13 – 3 = 10.

    https://www.tiwariacademy.com/ncert-solutions/class-9/science/chapter-4/

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