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JEE Main202310 Apr 2023Morning ShiftChemistryChemical Bonding and Molecular StructureActual

The compound which does not exist is

Options

  1. ANaO 2
  2. BBeH 2
  3. CPbEt 4
  4. DNH 4 2 BeF 4

Correct answer

A. NaO 2

Step-by-step solution

Oxide and peroxides of sodium are stable ( Na 2 O and Na 2 O 2 ) K ,   Rb ,   Cs form superoxides. Beryllium forms a hydride with molecular formula BeH 2 Organic lead (tetraethyl lead; TEL) is used as an antiknock agent in gasoline and jet fuels. The compound NH 4 2 BeF 4 on thermal decomposition produces BeF 2 and NH 4 F .

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