Question
Identify the species in which the metal atom is in +6 oxidation state.
A.
$$MnO_4^ - $$
B.
$${\left[ {Cr{{\left( {CN} \right)}_6}} \right]^{3 - }}$$
C.
$${\left[ {Ni{F_6}} \right]^{2 - }}$$
D.
$$Cr{O_2}C{l_2}$$
Answer :
$$Cr{O_2}C{l_2}$$
Solution :
$$\eqalign{
& {\text{In}}\,\,Cr{O_2}C{l_2},O.S.\,{\text{of}}\,\,Cr = + 6 \cr
& MnO_4^ - ,O.S.\,{\text{of}}\,\,Mn = + 7 \cr
& Cr\left( {CN} \right)_6^{3 - },O.S.\,{\text{of}}\,\,Cr = + 3 \cr
& NiF_6^{2 - },O.S.\,{\text{of}}\,\,Ni = + 4 \cr} $$