Ineed with the question 42 and answering the chart and it’s very hard and i’m struggling with it and if you need to see the picture big then click on it and it will be big

A.) Chromosome
B.) Gene
C.) DNA Strand

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.