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Why superoxides of of alkali metals are ...

Why superoxides of of alkali metals are paramagnetic ?

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To understand why superoxides of alkali metals are paramagnetic, we can break down the explanation into several steps: ### Step 1: Define Superoxides Superoxides are a type of oxide where the oxygen has a higher oxidation state than in typical oxides. For alkali metals, the superoxide can be represented as \( MO_2 \), where \( M \) is the alkali metal. **Hint:** Remember that superoxides contain more oxygen than typical oxides, which affects their electronic structure. ### Step 2: Identify the Ion Formation ...
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The alkali metals

Assertion : Supeoxides of alkali matels are paramagnetic. Reason : Superoxides conatain the ion O_(2)^(-) which has one unpaired electron in its anti-bonding molecule orbital.

Knowledge Check

  • The alkali metals

    A
    form salt-like hydrides
    B
    form predominantly covalent salts
    C
    show decreased chemical reactivity with oxygen in going from Li to Cs
    D
    show increasing electronegativity form Li to Cs.

  • Superoxides of alkali metals act as oxidising agents while normal oxids are basic in nature. The oxide which is paramagnetic in nature due to presence of unparied electron is

    A
    `Na_(2)O_(2)`
    B
    `KO_(2)`
    C
    `Na_(2)O`
    D
    `K_(2)O_(2)`

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