What metallic element is present in the intermediate step for Grigard's Reagent? Question 8 For an SN1 reaction, the substrate can be: Secondary or Tertiary Primary, Secondary or Tertiary Teetiary only Primary or Secondary Question 9 For an SN2 reaction, the substrate can be Primary, Secondary or Tertiary Tertiary only Secondary or Tertiary Primary or Secondary Question 10 For an E1 reaction the substrate can be Primary, Secondary or Tertary Primary or Secondary Secondary or Tertiary Tertiary only