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Which of the following actinoids contain...

Which of the following actinoids contains `6d^(2)` electrons its valence shell electron configuration?

A

`Np`

B

`Th`

C

`U`

D

`Pa`

Text Solution

Verified by Experts

The correct Answer is:
B
The valence shell electron configuration of `Th` is `[Rn]6d^(2)7s^(2)` while others have just one `6d` electron.
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R SHARMA-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN ELEMENTS-Follow-up Test
  1. The sixth period (n = 6) of the periodic table contains 32 elements an...

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  2. Which of the following lanthanoids does not contain 5d electron in its...

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  3. Which of the following actinoids contains 6d^(2) electrons its valence...

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  4. Which of the following groups of periodic table contains maximum numbe...

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  5. In s-block elements, the differentiating electron enters the orbital.

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  6. On the basis of chemical behavior, how many element belong to the s-bl...

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  7. A1though the elements in the periodic table are arranged according to ...

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  8. Which of the following elements is placed on its own in the table to i...

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  9. In p-block elements, theorbitals are successively filled.

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  10. The general valence shell electronic configuration of p-block elements...

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  11. How many elements belong to the p-block of the periodic table on the b...

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  12. For many years, the group 18(VIIIA) elements were called intert gases ...

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  13. p-block elements mostly fromcompounds.

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  14. Which of the groups of p-block contains the maximum number of metals?

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  15. Groups corresponding to the progressive filling of the ns and np orbit...

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  16. d-blcok elements are the elements in which the differentiating electro...

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  17. The general valence shell electronic configuration of transition eleme...

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  18. The transition metals are the elements in groups

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  19. Which of the d-block elements has zero electrons in the ns subshell?

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  20. f-block elements (sometimes called inner transition elements) are the ...

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