The atomic number of an element X is 13. What will be the number of electrons in its ion X³⁺ ?(a) 11 (b) 15 (c) 16 (d) 10

Academic Chemistry NCERT Class 9

Correct Answer: (d) 10

Explanation: If the atomic number of X is 13, the number of electrons in its X³⁺ ion would be 13 – 3 = 10.

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Updated on: 10-Oct-2022

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