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What are representative elements? Give t...

What are representative elements? Give their valence shell configuration

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`rarr` Representative elements are s and p-block elements except zero group.
`rarr` These have general electronic configurations `ns^(1-2) np^(1-5)`
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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-Very Short Answer Questions
  1. Which element do you think would have been named by (b) Seaborg's gr...

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

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

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

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

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

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  7. Give the outer shells configuration of d-block and f-block elements.

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  8. State and give one example for Dobereiner's law of triads and Newland'...

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  9. Name the anomalous pairs of elements in the Mendeleev's periodic table...

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

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

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

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

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  14. Energy of an electron in the ground state of the hydrogen atom is -2.1...

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

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

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

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  18. What are the major differences between metals and non-metals?

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  19. Use the periodic table to identify elements. (a) With 5 electrons in...

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  20. Use the periodic table to identify elements. (b) Would tend to lose ...

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