The spin-only magnetic moment value of the compound with strongest oxidizing ability among $MnF _{4}, MnF _{3}$ and $MnF _{2}$ is $.............$ $B.M.$ [nearest integer]
$4$
$3$
$2$
$5$
On adding excess of $N{H_3}$ solution to $CuS{O_4}$ solution, the dark blue colour is due to
In making gun-berrel, the steel used is
Which of the following has highest ionic radii
Passing $H_2S$ gas into a mixture of $Mn^{+2}, Ni^{+2}, Cu^{+2}$ and $Hg^{2+}$ ions in an acidified aqueous solution precipitates
The set of correct statements is:
$(i)$ Manganese exhibits $+7$ oxidation state in its oxide.
$(ii)$ Ruthenium and Osmium exhibit $+8$ oxidation in their oxides.
$(iii)$ $Sc$ shows $+4$ oxidation state which is oxidizing in nature.
$(iv)$ $Cr$ shows oxidising nature in $+6$ oxidation state.