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Modern periodic table consists of perio...

Modern periodic table consists of _____________ periods and ____________ groups.

A

7,16

B

7, 18

C

18,7

D

16,7

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BEYOND PUBLICATION-CLASSIFICATION OF ELEMENTS THE PERIODIC TABLE-EXERCISE
  1. The number of sub-groups in each group of Mendeleeff's periodic table ...

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  2. ………….,………are anomalous pair of elements in Mendeleeff's periodic table...

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  3. Modern periodic table consists of periods and groups.

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  4. 1st period contains……….elements.

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  5. The elements with three or less than three electrons in the outer shel...

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  6. The elements which have properties that are intermediate between the p...

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  7. of an element was defined as combining power of an element with respec...

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  8. Atomic radii of elements…….across a period from left to right.

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  9. The relative tendency of its atom to attract electrons towards it when...

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  10. The metallic character while non metallic character along a period.

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  11. Si and Ge are

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  12. Which pair of elements belongs to the same group ? (atomic numbers are...

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  13. O2-2 is isoelectronic with

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  14. Highest I.P is for

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  15. Electron affinity of Fluorine is less than that of Chlorine because

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  16. Which is the strongest base ?

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  17. Amphoteric oxide is

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  18. Highest oxidation state of +8 is given by

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  19. The most common oxidation state of Lanthanide is

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  20. In the sixth period, the orbitals being filled with electrons are

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