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What are representative elements? Give t...

What are representative elements? Give their valence shell configuration.

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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-Important Questions
  1. In terms of period and group, where would you locate the element with ...

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  2. What are representative elements? Give their valence shell configurati...

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  3. Justify the position of f-block elements in the periodic table.

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  4. An element 'X' has atomic number 34. Give its position in the periodic...

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  5. What factors impart characteristic properties to the transition elemen...

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  6. How does atomic radius vary in a period and in a group? How do you exp...

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  7. Among N^(-3), O^(-2), F^(-), Na^(+), Mg^(+2) and Al^(+3) (a) What is...

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  8. Among N^(-3), O^(-2), F^(-), Na^(+), Mg^(+2) and Al^(+3) (b) Arrange...

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  9. What is the significance of the term isolated gaseous atom while defin...

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  10. Ionization enthalpy [IE1] of O is less than that of N - explain.

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  11. Which in each pair of elements has a more negative electron gain entha...

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  12. Which in each pair of elements has a more negative electron gain entha...

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  13. What is electronegativity? How is this useful in understanding the nat...

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  14. What is screening effect? How is it related to IE?

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  15. What is an amphoteric oxide? Give the formula of an amphoteric oxide f...

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  16. Name the most electronegative element. Is it also having the highest e...

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  17. What is diagonal relation? Give one pair of elements, that have this r...

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  18. Radii of iron atom and its ions follow Fe > Fe^(2+) > Fe^(3+) - explai...

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  19. IE(2) > IE(1) for a given element - why?

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  20. What is lanthanide contraction? Give one of its consequences.

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