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Why do transition elements act as good c...

Why do transition elements act as good catalysts ?

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Transition elements can act as very good catalysts owing to : (1) the availability of vacant d-orbitals in the penultimate shell of the metal atom or ion and (2) the ability of these elements to exhibit variable oxidation states.
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What is transitional element.

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CHHAYA PUBLICATION-D - AND F - BLOCK ELEMENTS -QUESTION - ANSWER ZONE FOR BOARD EXAMINATION (SHORT ANSWER TYPE)
  1. Why are the transition elements called so ?

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  2. Why do transition elements act as good catalysts ?

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  3. Why is copper considered to be a transition element ?

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  4. Write important characteristics of transition elements.

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  5. Transition elements form coloured compounds. Why ?

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  6. Which of the following is more paramagnetic ? Co^(2+)(3d^(7)4s^(0)), C...

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  7. Fe^(2+) has a greater tendency to attain the + 3 oxidation state as co...

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  8. What is the main difference between the lanthanoids and the actinoids ...

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  9. Why are transition elements with d^(1) electronic configuration not st...

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  10. Why are properties of transition elements of the same series similar, ...

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  11. Both representative as well as transition elements exhibit variable ox...

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  12. Atomic radii of the transition elements do not decrease significantly,...

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  13. Calculate the 'spin only' magnetic moment of M^(2+)(aq)[Z=27] ion.

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  14. Arrange the following oxides in the order of their increasing acidity ...

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  15. Which of the following ions is paramagnetic ? Sc^(3+)(Z=21), Cu^(+)(Z=...

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  16. Name any two oxoanions of transition elements in which the oxidation s...

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  17. Decide which of the given atomic numbers are the atomic numbers of the...

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  18. Arange the following oxides in the order of their increasing basicity ...

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  19. What do you mean by disproportionation reaction. Give two examples.

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  20. Why do transition metals form alloys easily ?

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