Question

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?

• A. 13
• B. 10
• C. 16
• D. 14

Answer 1

The correct option is B 10

Mass number (A) of the atom = 27

Number of the neutron in the atom =14

Number of Electrons=Mass number-Number of neutrons=27-14

Number of electrons= 13

Since ions of the element have 3 positive charges number of the electron in the ion is 13-3 which equals 10.

Hence the answer is 10