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Increasing order of reactivity among gro...

Increasing order of reactivity among group - 1 elements is `Li < Na < K < Rb < Cs`, whereas among group - 17 elements it is `F > Cl > Br > I`- explain.

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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-Important Questions
  1. Why f-block elements are placed below the main table.

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  2. Give any five of the characteristic properties of transition elements.

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  3. What are rare earths and transuranic elements?

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  4. What is isoelectronic series? Name a series that will be isoelectronic...

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  5. IE(1) of Na is less than that of Mg but IE(2) of Na is higher than tha...

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  6. Increasing order of reactivity among group - 1 elements is Li < Na < K...

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  7. Predict the formulae of the stable binary compounds that would be form...

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  8. Which element of 3^(rd) period has the highest I.E(1) ? Explain the va...

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  9. What is valency of an element? How does it vary with respect to hydrog...

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  10. What is diagonal relationship? Give a pair of elements having diagonal...

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  11. What is lanthanoid contraction ? What are the consequences of lanthano...

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  12. Define the mordern periodic law . Discuss the construction of t...

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  13. Write an essay on s, p, d and f-block elements.

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  14. What is a periodic property? How the following properties vary in a gr...

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  15. What is a periodic property? How the following properties vary in a gr...

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  16. What is a periodic property? How the following properties vary in a gr...

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  17. What is a periodic property? How the following properties vary in a gr...

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  18. Define IE(1) and IE(2). Why is IE(2) > IE(1) for a given atom? Discuss...

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  19. What is electronegativity?

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  20. How does it very in a group and in a period ?

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