The electron–pair geometry of a molecule is tetrahedral. What is its bond angle if there are no lone pairs of electrons?

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.

The answer to this is the 3rd choice!

Answeramino acids;