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Why do transition elements exhibit more ...

Why do transition elements exhibit more than one oxidation state (varlable oxidation states) ?

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Transition elements exhibits more than one oxidation state.
Reason:
`rarr` The energy difference between (n - 1) d subshell and ns subshell is very low. So both of these subshells compelete to lose the electrons.
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-D AND F- BLOCK ELEMENTS AND CO-ORDINATION COMPOUNDS -VERY SHORT ANSWER QUESTIONS
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  8. What do you infer from the fact that M^(3+)//M^(2+) standard electrode...

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  9. Transition elements have high melting points. Why ?

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  10. Among the first transition series (3d series) Chromium has highest mel...

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  11. Compared to s-block elements, the transition elements exhibit higher e...

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  13. How do rou expect the density of transition elements to vary in a give...

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  14. How do the atomic and ionic sizes vary among transition metals in a gi...

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  15. Why do Mn, Ni and Zn exhibit more negative E^(Theta) values than expec...

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  16. Among the first transition series (3d series) only copper has positive...

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  17. Cu^(+2) forms halides like CuF(2), CuCl(2) and CuBr(2) but not CuI(2)....

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  18. The highest Mn fluoride is MnF(4) where as the highest oxide is Mn(2)O...

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  20. Why Zn^(2+) is diamagnetic whereas Mn^(2+) is paramagnetic ?

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