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 ions is the most stable in aqueous solution?
(At. No. $Ti = 22, V = 23, Cr = 24, Mn = 25$)
Mercury is transported in metal containers made of
Which of the following ion is diamagnetic
Which of the following transitional metal has lowest boiling point (B.P.)
Which of the following metals make the most efficient catalyst