The charge on  one mole of electrons is 9.6484×10y  Cmol−1. The value of y is_

Mass of one electron =9.11×10−31kg  Electrons in one mole =6.022×1023mol− ∴ Mass of one mole of electrons  =9.11×10−31kg×6.022×1023mol−1 =5.486×10−7kgmol−1  Charge on one electron =1.6022×10−19C ∴ Charge on one mole of electrons  =1.6022×10−19C×6.022×1023mol−1 =9.6484×104Cmol−1