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Which of the following is the pair of ...

Which of the following is the pair of shortest and longest periods in the modern periodic table ?

A

`1^(st),2^(nd)`

B

`2^(nd),3^(rd)`

C

`5^(th),7^(th)`

D

`1^(st),6^(th)`

Text Solution

Verified by Experts

The correct Answer is:
B
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SURA PUBLICATION-PERIODIC CLASSIFICATION OF ELEMENTS -ADDITIONAL QUESTIONS & ANSWERS ( CHOOSE THE CORRECT ANSWER )
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  2. Pick the correct order on decreasing trend of atomic size

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  3. Among the halognens which one is most electro-negative ?

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  4. The acid which makes iron passive is

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  5. The green layer found on the copper vessel is due to the formation of

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  6. The number of neutrons in ""8O^(16) is

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  7. Modern periodic law is based on

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  8. The first period of the modern periodic table has elements .

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  9. The number of elements present in sixth period of modern periodic ta...

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  10. Pottassium belongs to period .

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  11. Modern periodic table contains groups.

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  12. Noble gas belong to group

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  13. Which among the following are periodic properties ?

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  14. The distance from the centre of the nucleus to the outer most electro...

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  15. When an electron adds on F atom, It becomes

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  16. Arrange the following in the increasing order of the size . Cl^(-),...

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  17. As the positive charge increase , the size of the cation

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  18. Electronegativity values are based on

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  19. Electronegativity values of Na and Cl are 0.9 and 3.0 respectively, p...

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  20. The process of extracting the ore from the earth's crust is .

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