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Excluding hydrogen and helium, the small...

Excluding hydrogen and helium, the smallest element in the periodic table is :

A

lithium

B

Oxygen

C

Fluorine

D

Chlorine

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NCERT BANGLISH-PERIODIC CLASSIFICATION-I-Questions (Choose the Best Answer)
  1. Elements whose atoms have their s and p-sub-levels complete are the:

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  2. The law of triad is applicable to :

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  3. The law of octaves was stated by :

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

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  5. Which of the following has the lowest melting point ?

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  6. Which of the following hydroxide is most basic ?

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  7. Excluding hydrogen and helium, the smallest element in the periodic ta...

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  8. Which one among the following species has the largest atomic radius:

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  9. Which of the following is the lightest metal ?

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  10. Which of the following has highest ionization potential?

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  11. With respect to chlorine, hydrogen will be

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

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  13. Halogens belong to the :

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

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  15. Which arrangement of the following set of atoms is in order of increas...

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  16. The first attempt to classify the elements was made by :

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  17. Characteristic of transition elements is incomplete in :

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  18. Which of the following will have lowest first ionization enthalpy ?

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  19. Transition metals have the electronic configuration :

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  20. In the first transition series the incoming electron enters the :

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