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What is valency of an element? How does ...

What is valency of an element? How does it vary with respect to hydrogen in the third period.

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What is the valency of an element with Z= 15 ?

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What is valency? Write valency of hydrogen.

Balu (B) : Valence of an element with respect to hydrogen is the number of hydrogen atoms with which one atom of that element chemically combines. Venu (V) : Valence of an element with respect to oxygen is twice the number of oxygen atoms which one atom of that element combines.

How does the nature of oxides vary in the third period?

How does the nature of oxides vary in the third period?

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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