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Cationic radius is smaller than its corr...

Cationic radius is smaller than its corresponding neutral atom. Justify this statement.

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When an neutral atom lose one or more electrons it forms cation.
`Na toNa^(+) +e^(-)`
• The radius of this cation (T )is decreased than its parent atom (TN)
• When an atom is charged to cation, the number of nuclear charge becomes greater than the number of orbital electrons. Hence the remaining electrons are more strongly attracted by the nucleus. Hence the cationic radius is smaller than its corresponding neutral atom.
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FULL MARKS-PERIODIC CLASSIFICATION OF ELEMENTS -Additional Questions(2 MARK QUESTIONS)
  1. What are periodic properties ? Give example.

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  2. Define ionic radius.

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  3. Cationic radius is smaller than its corresponding neutral atom. Justif...

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  4. Anionic radius is higher than the corresponding neutral atom. Give rea...

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  5. What are isoelectronic ions ? Give examples.

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  6. Define lonization energy. Give its unit.

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  7. Ionization energy of beryllium is greater than the ionization energy o...

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  8. Ionization energy of nitrogen is greater than the ionization energy of...

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  9. Define electron gain enthalpy or electron affinity. Give its unit.

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  10. Electron gain enthalpy is F is less negative than Cl Why ?

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  11. Electron affinity of oxygen is less negative than sulphur. Justify thi...

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  12. Explain about the factors that affect electronegativity.

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  13. Explain about periodic variation of electronegativity across a period.

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  14. Explain about the period variation of electronegativity along a group.

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  15. Define valency . How is it determined ?

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  16. What is the basic difference in approach between Mendeleev's periodic ...

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  17. On the basis of quantum numbers, justify that the sixth period of the ...

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  18. Why do elements in the same group have similar physical and chemical p...

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  19. How do atomic radius vary in a period and in a group? How do you expla...

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  20. Explain why cation are smaller and anions are larger in radii than the...

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