Arrange the follwing complexs-in the increasing order of their molar conductivity.

Options

A. a) K[Co(NH₃)₂(NO₂)₄]
B. b) [Cr(NO₂)(NH₃)₅]₃[Co(NO₂)₆]₂
C. c) Mg[Cr(NH₃)(NO₂)₅]
D. d) [Cr(NH₃)₃(NO₂)₃]

Explanation

Molar conductivity depends on the number of ions produced on decomposition.
a) .+K[Co(NH_3)_2(NO_2)_4] rarr K^++[Co(NH_3)_2(NO_2)_4]^-.
2 ions
b) .[ ^* C r(N H_3)_5(~N O_2 ~J,[C circ(N dot O_2)_4]_2 rarr...
.3[Cr(NH_3)_5 NO_2]^2 *+2[Co(NO_2)_6]^3,-5. ions
c) .Mg[Cr(NH_3)(NO_2)_3] rarr dotM_R^2++[Cr(NH_3)(NO_2)_3]^2.
d) .[Cr(NH_3)_3(NO_2)_3] rarr. no iôns
.therefore. order of molar conductivity .(d)lt(a)lt(c)lt(b).