Which of the following has highest molar conductivity

Options

A. Diamminedichloroplatinum (II)
B. Tetraaminedichlorocobalt (III) chloride
C. Potassium hexacyanoferrate (II)
D. Hexaaquochromium (III) bromide

Answer

C

Explanation

As the number of ionsif complex compounds when dissolved in water increases, molar conductivity also increases.
1 mole of `[Pt(NH_(3))_(2)Cl_(2)]` gives one mole of ions.
1 mole of `[Co(NH_(3))_(4)Cl_(2)]Cl` gives two mole of ions
1 mole of `K_(4)[Fe(CN)_(6)]` gives five moles of ions
1mole of `[Fe(CO)_(5)]` gives zero moles of ions `[` because it is a neutral molecule ]
Hence, `K_(4)[Fe(CN)_(6)]` has the highest molar conductivity