Which of the following transition metal is present in misch metal
$La$
$Sc$
$Ni$
$Cr$
The $3d-$ metal ions are paramagnetic in nature because
Which of the following order is correct
$Sc\, (Z = 21)$ is a transition element but $Zn\, (Z = 30)$ is not because
Predict which of the following will be coloured in aqueous solution? $Ti ^{3+}, V ^{3+}, Cu ^{+},$ $Sc ^{3+}, Mn ^{2+}, Fe ^{3+}$ and $Co ^{2+} .$ Give reasons for each.
Write a note on interstitial compounds.