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Write the electronic configuration of al...

Write the electronic configuration of alkali metals `""_(3)Li,_(11)Na, ""_(19)K,""_(37)Rb,""_(55)Cs` and `""_(87)Fr`

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The reducing property of alkali metals Na, K, Rb, Cs, Li follows the order________

FULL MARKS-PERIODIC CLASSIFICATION OF ELEMENTS -Additional Questions(3 MARK QUESTIONS)
  1. What are the reasons behind the Moseley's attempt in finding atomic nu...

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  2. Draw a simplified form of periods and elements present in modern perio...

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  3. Write the electronic configuration of alkali metals ""(3)Li,(11)Na, ""...

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  4. Explain about the classification of elements based on electronic confi...

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  5. Write about the electronic configuration of 1^(st) and 2^(nd) period.

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  6. How many elements are there in 4^(th) period? Prove it.

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  7. How many elements are there in 6^(th) period? Prove it.

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  8. What are the two exceptions of block division in the periodic table?

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  9. Explain about the salient features of metals.

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  10. Explain about the characteristic of non - metals.

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  11. Periodic change in electronic configuration is responsible for the phy...

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  12. What is covalent radius ? . How would you determine the covalent radiu...

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  13. Define metallic radius.

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  14. Arrange Na^(+),Mg^(2+) and Al^(3+) in the increasing order of ionic ra...

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  15. Arrange the ions F^(-),O^(2-) and N^(3-) in the increasing order of th...

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  16. Mention some characteristics of ionization energy.

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  17. Why ionization energy and electron affinity are calculated in gaseous ...

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  18. How does the shielding effect caused by inner electrons affect the ion...

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  19. Ionization energy of Mg is greater than that of Al. Why?

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  20. What are factors which influence the electron gain enthalpy ?

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