According to the formula to name flowchart, for which type of compound is "A" a metal element or polyatomic ion?

Afamily is one another name for a group on the table of elements.

What does the cell nucleus do or, how does it function?

Silver tarnishes as silver metal reacts with hydrogen sulfide, h2s, in the air. in this reaction, dark silver sulfide, au2s, covers the surface of silver. when silver is polished, this coating of silver sulfide can be removed from the surface. this makes the silver shiny again. enter the coefficients that balance the tarnishing reaction equation. (type 1 for no coefficient.)