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The maximum number of elements in 3^(rd)...

The maximum number of elements in `3^(rd)` period is :

A

8

B

18

C

32

D

between 8 and 18

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The correct Answer is:
A
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MODERN PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -COMPETITION FILE (OBJECTIVE TYPE QUESTIONS (A)) (MCQs)
  1. In the long form of the perodic table, physical and chemical propertie...

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  2. The maximum number of elements in 3^(rd) period is :

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  3. Which pair of atomic numbers represent s-block elements?

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  4. The transition elements have a general electronic configuration:

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  5. The tendency to form complexes is maximum for

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  6. A element with atomic number 112 has recently been named as compernici...

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  7. The element Z=114 has been discovered recently. It will belong to whic...

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  8. The fourth period of the p-block contains :

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  9. Elements A, B, C, D and E have the following electronic configurations...

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  10. An element 'X' belongs to the third period of the p-block elements. It...

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  11. Which of the following properties generally decrease along a period ?

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  12. The correct order or radii of three species Ca, Ca ^(+) and Ca ^(2+) i...

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  13. In the ions P^(3-),S^(2-) and Cl, the increasing order of size is:

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  14. In general, the properties that decrease and increase down a group in ...

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  15. The ionisation energy of nitrogen is more than that of oxygen because

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  16. The correct order of increasing radii of the elementsSi,Al,Na and P is

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  17. Which of the following electronic configurations corresponds to the el...

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  18. In which of the following pairs, the first atom or ion is not larger t...

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  19. The family of elements with the highest ionisation enthalpy :

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  20. Which of the following has largest negative electron gain enthalpy ?

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