In the 1H NMR spectrum of 4-bromoacetanilide, what is the peak integration ratio between the amide methyl protons and the aromatic protons?

Because electrons have negligible mass, to account for the mass of the isotope, there must be 16 neutrons, 16 neutrally charged, massive, fundamental particles present in the sulfur nucleus. and thus finally, if we have the 32s2− ion, there are 18 electrons, 16 protons, and 16 neutrons.

I'm not sure but i will try to find out

The answer is c) pyrite