Understanding the Symbol
* 32: This is the atomic mass number (mass number), which represents the total number of protons and neutrons in the atom's nucleus.
* 16: This is the atomic number, which represents the number of protons in the atom's nucleus. Since the number of protons defines an element, all sulfur atoms will have 16 protons.
* S²⁻: This indicates a sulfur ion with a -2 charge. This means it has gained two extra electrons.
Calculating Electrons
* Neutral Sulfur: A neutral sulfur atom would have 16 electrons (equal to the number of protons).
* S²⁻ Ion: Since the ion has a -2 charge, it gained two extra electrons. Therefore, the sulfur ion has 16 + 2 = 18 electrons.
Summary
* Protons: 16
* Electrons: 18
