${[Sc{({H_2}O)_6}]^{3 + }}$ ion is
Colourless and diamagnetic
Coloured and octahedral
Colourless and paramagnetic
Coloured and paramagnetic
A nitrate when mixed with common salt gives a white precipitate which is soluble in dilute $N{H_4}OH$. It is the nitrate of
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]
Vanadium $(III) $ oxide is a strong
The number of unpaired electrons in ferrous ion is