Fundamentholfundamenthol
JEE Main2019Chemistry
Q.

Consider the hydrated ions of Ti2+, V2+, Ti3+, and Sc3+. The correct order of their spin-only magnetic moments is :

  1. A

    Sc3+< Ti3+< Ti2+< V2+

  2. B

    Ti3+< Ti2+< Sc3+< V2+

  3. C

    Sc3+< Ti3+< V2+< Ti2+

  4. D

    V2+< Ti2+< Ti3+< Sc3+

Solution

Electronic configuration of the given transition metal ions are

Sc3+ (Z = 21) 1s22s22p63s23p6

Ti2+ (Z = 22) 1s22s22p63s23p63d2

Ti3+ (Z = 22) 1s22s22p63s23p63d1

V2+ (Z = 23) 1s22s22p63s23p63d3

Magnetic moment is directly proportional to the number of unpaired electrons. So the correct increasing order of magnetic moment is

Sc3+ < Ti3+ < Ti2+ < V2+

0 1 2 3 unpaired electrons

← Back to full paper

Practice more Chemistry

Concept-wise practice with instant solutions on Fundamenthol.

Start practicing →