Multiple choice

Arrange the following in the decreasing order of bond angle.

  1. Fl2O > H2O > Cl2O

  2. Fl2O = H2O > Cl2O

  3. Cl2O > H2O < Fl2O .

  4. Cl2O > H2O > Fl2O

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D Correct answer
Explanation

this option is correct. In Cl2O ,  the two lone pair of electrons on Oxygen atom get associated in making of  Pπ - d π back bonding with the empty 'd' orbital of Cl  and this replusion is higher as compared to other options . In the case of H2O ,  oxygen is more electronegative than hydrogen. Hence,  the  shared pair of electrons will lie more closer to oxygen than hydrogen and  the bond pair - bond pair replusion is there which is more than the replusion between the electrons density of two florine atoms in case of Fl2O . 

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