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The period that contains only gaseous el...

The period that contains only gaseous elements is

A

1

B

2

C

3

D

4

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The correct Answer is:
A
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AAKASH SERIES-PERIODIC CLASSIFICATION-OBJECTIVE EXERCISE - 2 (PERIODIC CLASSIFICATION)
  1. In the periodic table, inversion of atomic weights took place in this ...

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  2. The frequency of the characterstic X ray of K(alpha) line of metal tar...

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  3. The period that contains only gaseous elements is

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  4. Pair of elements with the following atomic numbers have the same chemi...

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  5. The sub-shells filled one by one for 4th period elements are

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  6. The starting element and last element in the largest period in modern ...

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  7. Which of the following has both members from the same period of the pe...

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  8. As per the modern periodic law, the physical and chemical properties o...

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  9. Atomic number of nitrogen is 7. The atomic number of the third member ...

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  10. Element with atomic number 38, belongs to

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  11. Set of elements with the following atomic numbers belong to the same g...

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  12. The element which belong to 3rd period and IVA group of periodic table...

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  13. Screening by inner electrons will be more effective in

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

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  15. The period that includes all blocks of elements is

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

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  17. Element with atomic number 52 belongs to

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  18. The period number and group number in which maximum number of elements...

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

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

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