Single and Double displacement

general formula for a single displacement reaction

A + BX -> B + AX

What usually happens in a single displacement reaction?

A metal replaces a metal, or a nonmetal replaces a nonmetal. All depending on electronegativity

What is the activity series of metals based on?

Metal reactivity, determined by experiments and electronegativity values (lower electronegativity = more reactive).

When will a single displacement reaction occur with metals?

if the metal reactant has a lower electronegativity than the metal in the compound it’s reacting with

What is the relationship between halogens' reactivity and electronegativity?

Higher electronegativity = more reactive.

in double displacement, new products must be formed in order for a reaction to have taken place in form of p__________, g__, w____

precipitate, gas, water