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What is the main difference between the ...

What is the main difference between the lanthanoids and the actinoids in terms of filling of electrons ?

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In lanthanoids, th 6s - orbitals are filled up first and then the differential electrons occupy the 4f-orbitals. In actinoids, the 7s-orbitals are at first filled up and then the differential electrons occupy the 5f-orbitals.
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CHHAYA PUBLICATION-D - AND F - BLOCK ELEMENTS -QUESTION - ANSWER ZONE FOR BOARD EXAMINATION (SHORT ANSWER TYPE)
  1. Which of the following is more paramagnetic ? Co^(2+)(3d^(7)4s^(0)), C...

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

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

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

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

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

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

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

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

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

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

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

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

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

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  15. Why do transition metals form alloys easily ?

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  16. Transition elements form interstitial compounds. Why ?

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  17. In the quantitative volumetric analysis, why is K(2)Cr(2)O(7) preferre...

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  18. Name the product formed on heating potassium permanganate. Write the b...

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  19. Write the trends : Melting points of the transition elements in each s...

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  20. Write the trends : The atomic radius of the inner transition elements ...

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