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JEE Main202429 Jan 2024Evening ShiftChemistryp Block Elements (Group 15, 16, 17 & 18)Actual

Anomalous behaviour of oxygen is due to its

Options

  1. ALarge size and high electronegativity
  2. BSmall size and low electronegativity
  3. CSmall size and high electronegativity
  4. DLarge size and low electronegativity

Correct answer

C. Small size and high electronegativity

Step-by-step solution

Due to its small size, Oxygen exhibits high electronegativity, a high charge/ radius ratio, and no d-orbital oxygen shows anomalous behaviour. Oxygen exists as a diatomic molecule as O 2 comprising a double bond whereas all the other elements of group 16 exist as polyatomic molecules. Oxygen is paramagnetic and exists in a gaseous state at room temperature, which is completely opposite of the other Group 16 elements. The small size and high electronegativity of Oxygen enable it in the formation of pπ - pπ multiple

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