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Cr is a solid metal while Hg is a liquid...

Cr is a solid metal while Hg is a liquid metal - give reasons.

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CHHAYA PUBLICATION-D - AND F - BLOCK ELEMENTS -EXERCISE (SHORT ANSWER-TYPE QUESTIONS)
  1. Explain the following - (a) Melting point of Fe is higher than that of...

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  2. E(Cr^(3+)|Cr^(2+))^(0)=-0.4V, E(Mn^(3+)|Mn^(2+))^(0)=+1.5V, E(Fe^(3+...

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  3. Cr is a solid metal while Hg is a liquid metal - give reasons.

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  4. Both transition elements and representative elements exhibit variable ...

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  5. The value of third ionisation enthalpy of manganese is much higher tha...

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  6. Transition elements have higher enthalpies of atomisation. Why ?

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  7. For first row transition metals, E^(0) values are irregular - explain.

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  8. Actinoids exhibit more oxidation states than lanthanoids. Why ?

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  9. To calculate the magnetic moment of lanthanoid ions, both spin angular...

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  10. Why are + 3 oxidation states of gadolinium and lutetium stable ?

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  11. The colour of complex compounds of d - block elements depends on the l...

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  12. Why is the value of magnetic moment of actinoids less than that of lan...

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  13. Discuss three dissimilarities between lanthanoids and actinoids.

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  14. Why are transition elements having d^(1) - configuration unstable ?

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  15. Discuss the characteristic properties of the transition elements with ...

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  16. How is K(2)Cr(2)O(7) prepared from chromite ore ? Give the reactions i...

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  17. Describe the process of KMnO(4) preparation from pyrolusite ore. Menti...

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  18. {:(,IE(1)+IE(2),IE(3)+IE(4)),("Element",(KJ.mol^(-1)),(KJ.mol^(-1))),(...

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  19. A blackish - brown solid (A) is oxidised in air with the hydroxide of ...

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  20. Explain the behaviour of lanthanoids with respect to the following - (...

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