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4f elements are called...

`4f` elements are called ______________

A

s-block

B

transition

C

inner transition

D

inert gases.

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BEYOND PUBLICATION-CLASSIFICATION OF ELEMENTS THE PERIODIC TABLE-EXERCISE
  1. The physical and chemical properties of an atom depends on its

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  2. Number of elements in 6th period of modern periodic table is

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  3. 4f elements are called

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  4. The atomic radius of Cl than Cl^- atom.

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  5. In which units ionizations energy can be expressed ?

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  6. Metals are at side of the periodic table.

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  7. …………elements were discovered up to 1865.

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  8. Newlands octaves first element resembles

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  9. Vertical clumns of Mendeleeff are called

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  10. The number of sub-groups in each group of Mendeleeff's periodic table ...

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

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  12. Modern periodic table consists of periods and groups.

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  13. 1st period contains……….elements.

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

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

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

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

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

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

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  20. Si and Ge are

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