Shweta Thakur posted an Question
June 13, 2020 • 21:16 pm 30 points
  • IIT JAM
  • Chemistry (CY)

Plz explain why li firm only normal oxide . sodium form peroxide while other form superperoxide in s block

taining O, ion (peroxide ion) (c) Superoxides containing O, ion (superoxide dium form superoxides. The formatiort and s

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  • Suman Kumar

    https://doubtnut.com/minute-question-answer/lithium-forms-monoide-sodium-gives-peroxide-while-the-rest-of-the-alkali-form-superoxides-explain-30709089

  • Suman Kumar Best Answer

    The atomic size of lithium is very small therefore it can form bond with one oxygen atom...as the size of atom increases,its holding capacity also increases...therefore sodium can form peroxide besides oxide and pottasium forms  superoxides besides oxide and peroxide

  • Shweta thakur

    I think size is the reason

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    yes

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    The atomic size of lithium is very small therefore it can form bond with one oxygen atom. As the size of atom increases, its holding capacity also increases. Therefore Sodium can form peroxide besides oxide and Potassium forms superoxide besides oxide and peroxide

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    Because of the small size , Li⁺ has a strong +ve field around it which attract the -ve charge so strongly that it does not permit the oxide anion , O²⁻ to combine with another oxygen atom to form peroxide ion , O₂²⁻

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