JEE Main 2022 · 26 Jul · Shift 2 · Chemistry Q82

← JEE Main 2022 · 26 Jul · Shift 2

ChemistryInteger+4 / -1Question 82 of 90

Consider an imaginary ion ${}^{48}_{22}\mathrm X^{3-}$ . The nucleus contains 'a'% more neutrons than the number of electrons in the ion. The value of 'a' is ______. [nearest integer]

Your answer

Answer and worked solution

Official answer: 4

Count. Neutrons $48-22=26$ ; electrons $22+3=25$ .

Excess $\frac{26-25}{25}=4\%$ .

Answer: 4

Topics:Electronic configuration

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JEE Main 2022 · 26 Jul · Shift 2, Chemistry question 82