The tendency for a replacement reaction to occur increases as the interval between any two elements in the activity series decreases temperature decreases valence electrons are used up interval between any two elements in the activity series increases

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.)

How does kepler second law of planetary motion overthrow one of the basic beliefs of classical astronomy

How can the periodic table be used to predict the behavior of elements?