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An element of 5f-series but has no elect...

An element of 5f-series but has no electrons filled in 5f-sub shell

A

Ac

B

Ce

C

Th

D

U

Text Solution

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The correct Answer is:
C
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AAKASH SERIES-PERIODIC TABLE-OBJECTIVE EXERCISE -2A (MENDELEEFF.S PERIODIC TABLE)
  1. The elements with atomic number 10, 18, 36, 54 and 86 are all

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  2. Which of the following pairs has elements containing same number of el...

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  3. The period that includes all blocks of elements is

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  4. Among s-block metals and transition metals, which are more metallic?

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  5. Element with atomic number 52 belongs to

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  6. The general electronic configuration of f-block elements is

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  7. The common oxidation state exhibited by inner transition elements usua...

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  8. The pair of atomic numbers which represent the p-block elements

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  9. Which of the following is an element present in the d-block, but not a...

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  10. Which of the following is an alloy of non-transition elements?

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  11. Common oxidation state of elemental transition metal is

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  12. Configuration that does not denote a transition element

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  13. An element of 5f-series but has no electrons filled in 5f-sub shell

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  14. An element has 18 electrons in the outer most shell. The element is

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  15. Element with electronic arrangement [Ar]3d^24s^2 belongs to

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  16. (A): The ransition metal ions are generally paramagnetic in nature (...

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  17. Number of outer shells partially filled for representative elements

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  18. The atomic number of the element which is not included in the main bod...

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  19. Zinc is not considered as a transition metal because

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  20. The electronic configuration of an element 'X', is 1s^2 2s^2 2p^6 3s^2...

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