Write the reason for the anomalous behaviour of Nitrogen.

1.	Write the reason for the anomalous behaviour of Nitrogen.
Answer» 1. Due to its small size, high electro negativity, high ionisation enthalpy and absence of d-orbitals. 2. N₂ has a unique ability to form pπ- pπ multiple bond whereas the heavier members of this group (15) do not form pπ- pπ bond, because their atomic orbitals are so large and diffused that they cannot have effective overlapping. 3. Nitrogen exists a diatomic molecule with triple bond between the two atoms whereas other elements form single bond in the elemental state. 4. N cannot form dπ- dπ bond due to the absence of d-orbitals whereas other elements can.

Answer»

1. Due to its small size, high electro negativity, high ionisation enthalpy and absence of d-orbitals.

2. N₂ has a unique ability to form pπ- pπ multiple bond whereas the heavier members of this group (15) do not form pπ- pπ bond, because their atomic orbitals are so large and diffused that they cannot have effective overlapping.

3. Nitrogen exists a diatomic molecule with triple bond between the two atoms whereas other elements form single bond in the elemental state.

4. N cannot form dπ- dπ bond due to the absence of d-orbitals whereas other elements can.

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