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The elements with atomic numbers 31 belo...

The elements with atomic numbers 31 belongs to :

A

d-block

B

f-block

C

p-block

D

s-block

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NCERT TAMIL-PERIODIC CLASSIFICATION-I-Questions (Choose the Best Answer)
  1. The elements with atomic numbers 31 belongs to :

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  2. Representative elements are those which belong to :

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  3. The most electronegative element of the periodic table is

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  4. Which of the following forms stable gaseous negative ion

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  5. The elements having highest ionization energies within their periods a...

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  6. All the elements in a group in the periodic table have the same

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  7. Elements whose atoms have their s and p-sub-levels complete are the:

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  8. The law of triad is applicable to :

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  9. The law of octaves was stated by :

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  10. Which of the following property decreases down a group :

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  11. Which of the following has the lowest melting point ? CsCl RbCl KCl N...

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  12. Which of the following hydroxide is most basic ?

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  13. Excluding hydrogen and helium , the smallest element in the periodic t...

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  14. Which one among the following species has the largest atomic radius ?

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  15. Which of the following is the lightest metal ?

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  16. Which element of the following has the highest ionisation potential? ...

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  17. With respect to chlorine, hydrogen will be

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  18. Which element has the greatest tendency to lose electrons?

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  19. Halogens belong to the :

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  20. Compared to first ionization enthalpy of an atom, the second is :

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