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In all there aref-block elements in the ...

In all there are__________`f`-block elements in the periodic table.

A

`14`

B

`28`

C

`32`

D

`19`

Text Solution

Verified by Experts

The correct Answer is:
B
There are `2` series of `f`-block elements each containing `14` elements. These are placed at the bottom of the periodic table.
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R SHARMA-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN ELEMENTS-Follow-up Test
  1. f-block elements (sometimes called inner transition elements) are the ...

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  2. General valence shell electronic configuration of f-block elements is

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  3. In all there aref-block elements in the periodic table.

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  4. The lanthanoids and actinoids are sometimes called f-block transition ...

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  5. The chemistry of the early actinoids is more complicated than the corr...

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  6. In any atoms, the outermost electrons are those that have the highest ...

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  7. The elements Z = 117and 120 have not yet been discovered. In which fam...

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  8. Which of the following is the best criterion of a metal?

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  9. Which of the following is the best electrical consucting metals?

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  10. Which of the following is correct?

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  11. Which of the following is widely used in the manufacture of electronic...

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  12. Which of the following metals have low melting points? (i) Cesium (i...

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  13. Which block of elements consists of metals, non metals and metalloids ...

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  14. Nonmetals lie on theof the periodic table.

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  15. Which of the metals are usually referred to as lighter metals?

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  16. Metals are separated from nonmetals by a diagonal band of semimetals r...

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  17. Which of the following metals from amphoteric oxides?

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  18. Both metals and nonmetals behave similarly towards

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  19. Which of the following is not the characteristic feature of metals?

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  20. Which of the following is not the characteristic feature of nonmetals?

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