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Write ionic equation for the reduction o...

Write ionic equation for the reduction of `MnO_(4)^(-)` to `Mn^(2+)` by `H_(2)O_(2)`, in acidic medium.

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)(H)_(2) (O)_(2) rarr (.2 (H)^(+)+(O)_(2)+2 (e)^(-) xx 5)/(i)^(Mn) (O)_(4)+8 (H)^(+)+5 (e)-rarr (Mn)^(2+)+4 (H)_(2) (O) xx 2)/(2 (Mn) (O)_(4)^(-)+6 (H)^(+)+5 (H), (O)_(2) rarr 2 (Mn)^(2)+8 (H)_(2) (O)+5 (O)_(2).
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  11. Write the general outer electronic configuration of d-block elements.

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  12. What is a transition elements?

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  13. Transition elements are

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  14. The first transition element is

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