Question

Titanium shows magnetic moment of 1.73 B.M.in its compound. What is the oxidation numberof Ti in the compound ?

• A. +1
• B. +4
• C. +3
• D. +2

Answer 1

Answer: (C)

Magnetic moment = $\sqrt{n(n+2)}$ B.M.
Magnetic moment of Ti ion = 1.73 BM
$\sqrt{n(n+2)}$ . = 1.73
$n(n+2)$ = 3
$n$ = 1
$\therefore$ Ti ion has 1 unpaired electron i.e., $3d^1$ con- figuration.
$\therefore$ Complete configuration of $T{i}^{3+}$ ion is ; $T{i}^{3+}$ (Z = 22) : $[Ar{]}^{18}3d^1$