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The number of elements known when Mendel...

The number of elements known when Mendeleef presented periodic table is

A

50

B

90

C

63

D

102

Text Solution

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The correct Answer is:
C
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NARAYNA-PERIODIC TABLE -All Questions
  1. Number of short periods in Mendeleef table

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  2. The properties of the following elements were predicted by Mendeleeff ...

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  3. The number of elements known when Mendeleef presented periodic table i...

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  4. The element 'Sc' is known long back as

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  5. Which of the following is not an anamalous pair?

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  6. The number of periods in the long from of periodic table is

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  7. The total number of gaseous elements are

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  8. Which of the following remains unchanged in descending in a group in t...

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  9. In a period, elements are arranged in strict sequence of

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  10. Which of the following is not a representative element

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  11. The inert gas present in the second long period is

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  12. Mono atomic element among the following is

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  13. Which one of the following pairs of atomic numbers, represents element...

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  14. The atomic number of elements of second inner transition elements lie ...

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  15. The atomic number of elements of first transition series lie in the ra...

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  16. In the long form of periodic all non-metals are placed in

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  17. All elements of the same group will have

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  18. The atomic number of an element is always equal to

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  19. Which of the following is not the electronic configuration of a repres...

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  20. Which of the following electronic configuration corresponds to an iner...

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