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AP EAMCET202119 Aug 2021Evening ShiftChemistryChemical Bonding and Molecular StructureActual

How many among the given species have a bond order of 0 . 5 ? H 2 + , He 2 + , He 2 − , B 2 + , F 2 − , Be 2 2 −

Options

  1. A2
  2. B3
  3. C1
  4. D4

Correct answer

D. 4

Step-by-step solution

As according to the concept of molecular orbital theory the bond order depends on number of bonding electrons and anti bonding electrons and can be given by with the formula: BO   =   bonding   electrons - antibonding   electrons 2 Now, according to the digram of molecular orbital theory there are four molecules which show bond order is equal to 0 . 5 these are H 2 + ,   He 2 + ,     He 2 - and B 2 +

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