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Predict the density of Cs from the densi...

Predict the density of Cs from the density of the following elements.
`K=0.86g//cm^(3)" Ca"=1.548g//cm^(3)" Sc"=2.991g//cm^(3)`
`Rb=1.532g//cm^(3)" Sr"=2.63g//cm^(3)" Y"=4.34g//cm^(3)`
`Cs=? " Ba"=3.51g//cm^(3)" La"=6.16g//cm^(3)`

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PRADEEP-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -Additional Question (Short Answer Question )
  1. Define Modern Periodic law . .

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  2. What is the cause of periodicity in properties of the elements ? E...

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  3. Predict the density of Cs from the density of the following elements. ...

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  4. Describle the main feature of the long form of the periodic tabl...

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  5. (a) state the modern periodic law. (b) Describe in brief the main fe...

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  6. Explain briefly Groups and Periods' Transition and Normal element...

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  7. On the basis of electronic configuration justify that the second ...

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  8. Account for the fact that 4th period has eighteen and not eight ...

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  9. Elements A, B, C and D have atomic numbers 12, 19, 29 and 36 res...

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  10. What do you understand by Representative elements ? Name the groups...

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  11. What are transition elements ? Why are they so called ? Name the d...

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  12. Which elements are called inner transition elements ? Name the diff...

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  13. Describe the main characteristic properties of s, p, d and f-block ele...

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  14. Name the different blocks of elements in the periodic table. Give the ...

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  15. Though copper silver and gold atoms have completely filled sets...

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  16. What do you understand by periodic properties of elements ? Name ...

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  17. How do atomic sizes vary in a group and in a period? Give reason for t...

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  18. What is meant by atomic and ionic radii ? Explain giving reason ...

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  19. The size of an anion is larger than that of its parent atom. Give...

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  20. The size of a cation is smaller that than of its parent atom .Give...

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