Although $\mathrm{Cr}^{3+}$ and $\mathrm{Co}^{2+}$ ions have same number of unpaired electrons but the magnetic moment of $\mathrm{Cr}^{3+}$ is $3.87$ $B.M.$ and that of $\mathrm{Co}^{2+}$ is $4.87$ $B.M.$ Why ?
In $\mathrm{Cr}^{3+}$, there is no orbital contribution because of symmetrical configuration while in $\mathrm{Co}^{2+}$, the orbital contribution is present significantly.
Which one of the following does not correctly represent the order of the property indicated against it ?
Chloride of which of the following element is coloured
Metals generally melt at very high temperature. Amongst the following, the metal with the highest melting point will be $......$
What is the magnetic moment of ${[Fe{F_6}]^{3 - }}$
Which one of the following has the maximum number of unpaired electrons