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The correct order of increasing radii of...

The correct order of increasing radii of the elements`Si,Al,Na and P` is

A

`Ai, Al, P, Na`

B

`Al, Si, P, Na`

C

`P, Si, Al, Na`

D

`Al, P, Si, Na `

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The correct Answer is:
C
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MODERN PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -COMPETITION FILE (OBJECTIVE TYPE QUESTIONS (A)) (MCQs)
  1. The maximum number of elements in 3^(rd) period is :

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

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  3. The transition elements have a general electronic configuration:

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  4. The tendency to form complexes is maximum for

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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  20. The main anion O^(-) is isoelectronic with

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