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What are lanthanoids? Write the name of ...

What are lanthanoids? Write the name of the lanthanoids.

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Lanthanoids are-

The gradual decrease in size (actionoid contraction) is from element to element is greater among the actinoids than that among the lanthanoids (lanthanoid contraction).

Across the lanthanide series,the basicity of the lanthanoide hydroxides:

Define lanthanoids. Give three differences between lanthanoids and actinoids.

(i)with reference to structural variability and chemical reactivity write the differences between lanthanoids and actinoids (ii) Name a member of the lanthanoid series which is well known to exhibit +4 oxidation state

Compare the chemistry of actinoids with that of the lanthanoids with special reference to:

Larger number of oxidation states are exhibited by the actinoids then those by the lanthanoids, the main reason being

The effect of lanthanoid contraction in the lanthanoid series of elements by and large means :

The most common lanthanoid is :

Why are there fourteen elements in the lanthanoid series?

ICSE-d- AND- f- BLOCK ELEMENTS-EXERCISE (PART-II) (DESCRIPTIVE QUESTIONS)(SHORT ANSWER QUESTIONS)
  1. What happens when : (i) K2CrO7 reacts with acidified solution of KI ...

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  2. Explain the difference between the electronic configuration of gadolin...

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  3. What are lanthanoids? Write the name of the lanthanoids.

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  4. What are actinoids ? Write the name of all the actinoids.

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  5. ""(57)La and ""(71)Lu Lu have no partially filled 4f-subshell, yet the...

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  6. Why the elements with at. no. 57 to 71 are called inner transition ele...

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  7. Comment upon the statement that: (i) The electronic configurations o...

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  8. Which is the last element in the series of the actinoids? Write the el...

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  9. In what way is the electronic configuration of the transition elements...

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  10. What are different oxidation states exhibit by lanthanoids?

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  11. Explain the following terms : (a) Chemistry of all Lanthanoids is so...

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  12. What is the electronic difference between lanthanoids and actinoids? W...

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  13. Name the elements with atomic number 58 and 59 and write their electro...

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  14. What are inner-transition elements? Write their general electronic con...

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  15. Define lanthanoids. Give three differences between lanthanoids and act...

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  16. What happens when : (i) Acidified K2Cr2O7 reacts with Kl. (ii) K2...

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  17. The sums of first and second ionisation energies and those of third an...

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  18. Of the ions Ag^(+),Co^(2+) and Ti^(4+) ,which ones will be coloured in...

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  19. Among ionic species, Sc^(3+), Ce^(4+) and Eu^(2+), which one is a goo...

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  20. of the ions Co^(2+), Sc^(3+) and Cr^(3+) which one will give coloured ...

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