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Explain the folloiwng phenomenon: Transi...

Explain the folloiwng phenomenon: Transition metals are much harder than the alkali metals.

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R G PUBLICATION-THE d-AND f-BLOCK ELEMENTS-EXERCISE
  1. What are inner transition elements.

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  2. What are coinage metals.

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  3. Explain the folloiwng phenomenon: Transition metals are much harder th...

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  4. Actinoid contraction is greater from element to element than lanthanoi...

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  5. How will you prepare: K2MnO4 from MnO2?

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  6. How will you prepare: Na2Cr2O7 from Na2CrO4?

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  7. Account for the folloiwng: Mn^(2+) is more stable than Fe^(2+) towards...

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  8. Account for the folloiwng: The enthalpy of atomization is lowest for Z...

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  9. Account for the folloiwng: Actinoid elements show wide range of oxidat...

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  10. Explain the folloiwng facts: Among lanthanoids Ln(III)compound are pre...

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  11. The E(M^(2+)//M)^(Theta) for copper positive (+0.34V)It is only metal ...

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  12. Explain the folloiwng facts: The metallic radii of the 3rd (5d) series...

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  13. Explain briefly how +2 state becomes more and more stable in the first...

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  14. Write three general chracteristics of transition elements.

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  15. Discuss about the melting point of transition elements.

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  16. "In a given series of the transition elements the atomic size increase...

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  17. Account for the folloiwng: The enthalpy of atomization is lowest for Z...

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  18. What is meant by 'Exchange energy'? How this energy affect the ionisat...

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  19. Compare the stability of +2 oxidation state for the elements of first ...

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  20. Write four factors which affect the relative stability of various oxid...

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