$[Co(NH_3)_6 ][Cr(NO_2)_6 ]$ અને $[Cr(NH_3)_6][Co(NO_2)_6]$
| કૉલમ$-I$ | કૉલમ$-II$ |
| $(a)\;Co^{+3}$ | $(i)\;\sqrt{8}\; B.M.$ |
| $(b)\;Cr^{+3}$ | $(ii)\;\sqrt{35}\; B.M.$ |
| $(c)\;Fe^{+3}$ | $(iii)\;\sqrt{3}\; B.M.$ |
| $(d)\;Ni^{+2}$ | $(iv)\;\sqrt{24}\; B.M.$ |
| $(v)\;\sqrt{15}\; B.M.$ |
$(a)\quad (b)\quad (c)\quad (d)$
(પરમાણુ ક્રમાંક $Cr = 24, Mn = 25, $$Fe = 26, Ni = 28$)