Describing and explain the trends in metal reactivity

Question 1

as you go down the group …

Answer 1

metals become more reactive with oxygen water and dilute acids

atoms larger in size down

distance between nucleus outer electrons increases

more inner shells to shield

electrostatic attraction is less so outer electrons can

escape more readily

Question 2

as you go across …

Answer 2

metals become less reactive with oxygen water and d.a

mire electron lost to form metal inos

sodium had to lose 1 electron to be metal ion but mg is in the same period but has 2 lose 2 electrons

therefore mg less reactive more energy needed