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Bismuth in +5 oxidation state is a stron...

Bismuth in +5 oxidation state is a strong oxidising agent. Why?

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Due to the largest atomic volume of Bi, the largest nuclear charge, +5 oxidation state of Bi is less stable and has a strong tendency to accept electrons and reduce to stable +3 state. Therefore bismuth in +5 oxidation state acts as a strong oxidising agent.
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Lanthanoids and actinoids are f-block elements in which the last electron enters the anti-penultimate energy level. The most common oxidation state of lanthanoids is +3, though +2 and +4 oxidation states are exhibited by some of the elements. In lanthanoid series, there is a progressive decrease in atomic and ionic radii, known as lanthanoid contraction. Unlike lanthanoids, actinoids show a large number of oxidation states. Name an element of lanthanoid series, which is known to show +4 oxidation state. Is it a strong oxidising agent or reducing agent?

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Knowledge Check

  • The strong oxidising agent has :

    A
    high value of reduction potential
    B
    high value of oxidation potential
    C
    low value of reduction potential
    D
    high tendency to lose electrons

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