Medium MCQ +4 / -1 PYQ · JEE Mains 2021

Match items of List-I with those of List-II :

List - I
(Property)
List - II
(Example)
(a) Diamagnetism (i) MnO
(b) Ferrimagnetism (ii) ${O_2}$
(c) Paramagnetism (iii) NaCl
(d) Antiferromagnetism (iv) $F{e_3}{O_4}$


Choose the most appropriate answer from the options given below :

  1. A (a)-(ii), (b)-(i), (c)-(iii), (d)-(iv)
  2. B (a)-(i), (b)-(iii), (c)-(iv), (d)-(ii)
  3. C (a)-(iii), (b)-(iv), (c)-(ii), (d)-(i) Correct answer
  4. D (a)-(iv), (b)-(ii), (c)-(i), (d)-(iii)

Solution

<p> A. NaCl is diamagnetic because all electrons are paired in Na<sup>+</sup> and in Cl<sup>−</sup> . So, it shows diamagnetism. </p> <p> B. Fe<sub>3</sub>O<sub>4</sub> is ferrimagnetic because of the presence of the unequal alignment of magnetic moment in opposite direction. </p> <p> C. O<sub>2</sub> molecule has two unpaired electrons. So, it is paramagnetic. </p> <p> D. In MnO, the orientation of the electrons of Mn and O is such that they cancel their effects, hence it is antiferromagnetic.</p>

About this question

Subject: Chemistry · Chapter: Chemical Bonding and Molecular Structure · Topic: Ionic and Covalent Bonding

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