unpaired electron $=\,2$

spin only magnetic moment $(\mu )\, = \,\sqrt {2(2 + 2)} \, = \,\sqrt 8 \,B.M$

$T{i^{ + 3}}\, = \,1{s^2}\,2{s^2}\,2{p^6}\,3{s^2}\,3{p^6}\,3{d^1}$

unpaired electron $=\,1$

$(\mu )\, = \,\sqrt {1(1 + 2)} \, = \,\sqrt 3 \,B.M$

${V^{ + 2}}\, = \,1{s^2}\,2{s^2}\,2{p^6}\,3{s^2}\,3{p^6}\,3{d^3}$

$(\mu )\, = \,\sqrt {3(3 + 2)} \, = \,\sqrt {15} \,B.M$

$S{c^{ + 3}}\, = \,1{s^2}\,2{s^2}\,2{p^6}\,3{s^2}\,3{p^6}$

$(\mu )\, =0$