Question

why does the reactivity of metal increases and that of non metal decreases as we move down the group

Answer 1

when we go from top to down in a group .number of shell increase due yo which attraction force between nucleus and electron less and hence electron is essalu loss by atom ... . .

Answer 2

as we move down a group no of shell increases, distance between nucleus and outermost electron increases, nuclear force of attraction or nuclear pull decreases so because of this reactivity of metal Increases................