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In the modified Mendeleev's periodic tab...

In the modified Mendeleev's periodic table, the `18` vertical columns were divided into______groups.

A

`15`

B

`17`

C

`16`

D

`14`

Text Solution

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The correct Answer is:
C
Sixteen groups designated as `IA, IIA,……,VIIA, IB, IIB,…….., VIII B` and zero.
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R SHARMA-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN ELEMENTS-Follow-up Test
  1. Which of the following numbers are called magic numbers?

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  2. The short form of the modern periodic table of the elements (also call...

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  3. In the modified Mendeleev's periodic table, the 18 vertical columns we...

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  4. In the short form of the modern periodic table, the period number corr...

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  5. In the short form of the modern periodic table, the first period conta...

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  6. In the short from of the modern periodic table,elements of both sixth ...

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  7. The naming of the new elements had been traditionally the privilege of...

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  8. Unnilennium is the systematic name for element having atomic number

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  9. Which of the following elements have been duly synthesized and officia...

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  10. What would be the IUPAC name and symbol for the element with atomic nu...

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  11. Total number of element in each period is twice the number ofbeing fil...

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  12. The first period (n = 1) starts with the filling ofsubshell.

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  13. The second period (n = 2) involves the filling up to electron inatomic...

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  14. The third period (n = 3) involves the filling up to electrons inelemen...

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  15. The fourth period (n = 4) does not involve the filling up of electrons...

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  16. The fifth period (n = 5) beginning with rubidium is similar to the fou...

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  17. The sixth period (n = 6) of the periodic table contains 32 elements an...

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  18. Which of the following lanthanoids does not contain 5d electron in its...

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  19. Which of the following actinoids contains 6d^(2) electrons its valence...

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  20. Which of the following groups of periodic table contains maximum numbe...

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