Question

no.of electrons in 1mole of ammonium ion

Answer 1

Ammonium ion is $NH_4^+$
Number of electrons in N = 7
Number of electrons in H = 1
Number of electrons in 4 H = 1*4 = 4
Total = 7+4 = 11
Since there is a positive charge on it, there is one electron less
So number if electrons in one $NH_4^+$ = 11-1 = 10 electrons

Number of electrons in 1 mole $NH_4^+$ = 10 mole electrons
10 mole electrons means = 10×6.022×10²³ = 6.022×10²⁴ electrons

So total electrons is 6.022×10²⁴.