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How many following properties varies in ...

How many following properties varies in a group and in a period ?
(a) Atomic radius `" "` (b) Ionisation enthalpy
(c) Electronegativity `" "` (d) Electron gain enthalpy

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VGS PUBLICATION-BRILLIANT-CLASSIFICATION OF ELEMENTS-THE PERIODIC TABLES-EXERCISE
  1. Define electronegativity of an element on Mulliken scale.

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  2. What is Mulliken's proposal about electronegativity ?

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  3. How many following properties varies in a group and in a period ? (a...

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  4. How do metallic and non-metallic charcters vary in a group and ...

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  5. Give example where the electronic configuration of an element does not...

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  6. How many elements are present in the 5 ^(th) period of the lon...

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  7. What do you mean by screening effect ?

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  8. Arrange the elements B, N, Be and O in the increasing order of their i...

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  9. What is meant by first ionization energy ?

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  10. What is meant by second ionization energy ?

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  11. What do you mean by element family ?

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  12. Give the outer orbit general electronic configuration of (a) Noble g...

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  13. Give the outer orbit general electronic configuration of (b) Represe...

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  14. Give the outer orbit general electronic configuration of (c ) Transi...

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  15. Give the outer orbit general electronic configuration of (d) Inner t...

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  16. What is a triad?

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  17. Chlorine bromine , iodine are Dobereiner's triads .How do you ju...

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  18. Why are lanthanides and actinides placed separately at the bot...

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  19. Second ionization energy of an element is higher than its firs...

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  20. Hydrogen can be placed in group 1 and group 17 in the periodic table. ...

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