Question

the correct order of equivalent conductance at infinite dilution of LiCl NaCl and KCL

Answer 1

the correct order is KCl > NaCl > LiCl .

explanation:- in case of Alkali metals , hydration energy decreases with increase atomic number e.g., order of hydration energy is Li+ > Na+ > K+ > Rb+ > Cs+ .
and we know, mobility is inversely proportional to hydration energy so,
order of mobility is Cs+ > Rb+ > K+ > Na+ > Li+
now, equivalent conductance is directly proportional to mobility .

that's why order of equivalent conductance is K+ > Na+ > Li+
hence, order of equivalent conductance is KCl > NaCl > LiCl

Answer 2

The correct Order of equivalent Conductance at infinite dilution of LiCl, NaCl and KCl is :
KCl>NaCl>LiCl

Reason:
In case of Alkali metals ions like Sodium, Lithium and potassium the hydration tendency follows the order

Li+>Na+>K+

Hydration makes the cation heavier and larger 

Hence mobility has the following order :Li+<Na+< K+

HenceThe correct Order of equivalent Conductance at infinite dilution of LiCl, NaCl and KCl is :
KCl>NaCl>LiCl