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  1. Bond length between hybridised carbon atom and other carbon atom is minimum in
  2. Boron has two stable isotopes, ¹°B(19%) and ¹¹B(81%). Average atomic weight
  3. The extra amount of energy, which the molecules of the reactants have to absorb
  4. Which of the following is an ore of aluminium
  5. All the s-block elements of the periodic table are placed in the groups….