reacivity of metals

• In reality, aluminum is less reactive than its position in the reactivity series due to an oxide layer
• Aluminum reacts with oxygen


  1. Forms an oxide layer

  2. Acts like a barrier for further reaction
• Acid plus metal


  • Metals above hydrogen in the reactivity series react to form salt + H2
  • Metals below hydrogen in the reactivity series form no reaction with dilute acid
• Oxidation number for transition metals is +2 except for argon which is instead +1
• Salt


  Formed by pairing metal ions with anion of acid