The spin-only magnetic moment value of $M ^{3+}$ ion (in gaseous state) from the pairs $Cr ^{3+} / Cr ^{2+}$, $Mn ^{3+} / Mn ^{2}, Fe ^{3+} / Fe ^{2+}$ and $Co ^{3+} / Co ^{2+}$ that has negative standard electrode potential, is $B.M...........$ [Nearest integer]

Which one amongst the following are good oxidizing agents?

$A.$ $Sm ^{2+}$    $B.$ $Ce ^{2+}$   $C.$ $Ce ^{4+}$    $D.$ $Tb ^{4+}$

Choose the most appropriate answer from the options given below :

The compound which does not show paramagnetism is :-

'Spin only' magnetic moment is same for which of the following ions?

$A$. $\mathrm{Ti}^{3+}$   $B$. $\mathrm{Cr}^{2+}$   $C$. $\mathrm{Mn}^{2+}$   $D$.$\mathrm{Fe}^{2+}$  $E$. $\mathrm{Sc}^{3+}$

Choose the most appropriate answer from the options given below.

Which of the following transition metal is present in misch metal

Assertion : Magnetic moment values of actinides are lesser than the theoretically predicted values.

Reason : Actinide elements are strongly paramagnetic.