Easy MCQ +4 / -1 PYQ · JEE Mains 2022

The pair, in which ions are isoelectronic with AI3+ is :

  1. A Br<sup>$-$</sup> and Be<sup>2+</sup>
  2. B Cl<sup>$-$</sup> and Li<sup>+</sup>
  3. C S<sup>2$-$</sup> and K<sup>+</sup>
  4. D O<sup>2$-$</sup> and Mg<sup>2+</sup> Correct answer

Solution

O<sup>2–</sup>, Mg<sup>2+</sup> and Al<sup>3+</sup> are isoelectronic. All have 10 electrons.

About this question

Subject: Chemistry · Chapter: Atomic Structure · Topic: Bohr's Model

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