The common simple ion is S-2 and the most common polyatomic ion is probably SO4-2.
The symbol for sulfide, one of the many ions, is S2-.
Sulfite = SO3-2Not to be confused as Sulfide
The formula for Cs and S2- is Cs2S
Sulfur (S) tends to form covalent bonds with other nonmetals. However, when bound to a metal sulfur will gain two electrons to form the sulfide ion (S2-).
+2. Zinc forms the Zn2+ ion in its ionic compounds. Zinc has electronic configuration of [Ar] 3d10, 4s2 and the two s electrons are lost to form the Zn2+ ion.
The symbol for sulfide, one of the many ions, is S2-.
The most common ion formed by sulfur is the sulfide ion (S2-).
The sulphide (or sulfide) ion is similar to a sulfur atom except for 2 additional electrons, so its formula is S2-. In older references you might find this formula written S-2 or S--.
Sulfite = SO3-2Not to be confused as Sulfide
Determine the atomic number(s) of all the element(s) in the ion, then multiply these atomic numbers by the number of atoms of the corresponding element in the formula of the ion, and add the resulting products to obtain the number of protons in an ion.
P 3- is the ion with the noble gas configuration.
The formula for Cs and S2- is Cs2S
Sulfur (S) tends to form covalent bonds with other nonmetals. However, when bound to a metal sulfur will gain two electrons to form the sulfide ion (S2-).
+2. Zinc forms the Zn2+ ion in its ionic compounds. Zinc has electronic configuration of [Ar] 3d10, 4s2 and the two s electrons are lost to form the Zn2+ ion.
Iodide is an ion, not s a substance int its own right. It is however a component of many pure substances. Iodine, the element from which the iodide ion is derived, is a pure substance.
Sulfur atoms will gain two electrons in order to achieve a noble gas electron configuration. A sulfide ion has the formula S2-.
The formula for iron(II) sulfide is FeS. In this compound, iron has a +2 oxidation state, denoted as iron(II). It consists of one iron ion (Fe²⁺) combined with one sulfide ion (S²⁻). If you meant iron(III) sulfide, the formula would be Fe₂S₃, where iron has a +3 oxidation state.