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The +1 oxidation state is more stable th...

The `+1` oxidation state is more stable than the +3 oxidation state for thallium. Explain why ?

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The outer electronic configuration of thalium is `6s^(2)6p^(1)`. Therefore , it can show oxidation states of `+1` and `+3` But due to inert pair effect, the `6s^(2)` electrons are more strongly attracted by the nucleus than `6p^(1)` electron. Therefore, `6s^(2)` electrons do not participate in bond formation. Instead only `6p^(1)` electron takes part is more stable than its `+3` state.
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Knowledge Check

  • The oxidation state of -3 is least stable in

    A
    `As`
    B
    `P`
    C
    `Bi`
    D
    `Sb`

  • The +1 oxidation state of thallium is more stable than its +3 oxidation state because of

    A
    its atomic size
    B
    its ionization potential
    C
    inert pair effect
    D
    diagonal relationship

  • Stable oxidation state of No is

    A
    `+2`
    B
    `+3`
    C
    `+4`
    D
    `+7`

    • Similar Questions

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    +2 oxidation state of lead is more stable than +4 oxidation state . Give reasons.

    Manganese in the +2 oxidation state is more stable than +3 oxidation state where as iron is stable at +3 oxidation state than +2 oxidation state. Explain why

    Fluorine exhibit only – 1 oxidation state whereas other halogens exhibit +ve oxidation states also. Explain why ?

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