The molar ionic conductivities of Mg2+ and SO are 106.0 S cm² mol¹ and 2- cm² mol¹ respectively. The value of limiting molar conductivity MgSO4 will be : 160.0 S cm² -1
a. 266 S cm² mol -1
b. 622 S cm² mol-1
c. 288 S cm² mol-1
d. 822 S cm² mol-1