Question

68g of NH4 , find the number of electron on NH4 ?

Answer 1

68 g means 4 moles of NH3 ( NH4 does not exist)
No of moles of electrons in one mole
= 7+3= 10
there for in 4 moles 40 moles of electron present

There fore no of electrons = 40*6.022*10²³