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What are representative elements? Give t...

What are representative elements? Give the reason for their chemical reactivity?

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CHHAYA PUBLICATION-CLASSIFICATION OF ELEMENTS & PERIODICITY IN PROPERTIES-SHORT-TYPE QUESTIONS
  1. Give examples where the atomic mass of the elements have been correcte...

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  2. What types of elements give colouration in flame test and why?

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  3. What are representative elements? Give the reason for their chemical r...

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  4. Describe the method of nomenclature of transfermium elements. Give the...

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  5. Mention the importance of subgroup in the mendeleev's periodic table.

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  6. Write two important characteristics of s-block elements.

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  7. Write the names and symbols of two terminal elements of first transiti...

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  8. Zn, Cd and Hg are d-block elements but they are not regarded as transi...

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  9. Identify the alkali metal, alkaline earth metal and chalcogen from the...

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  10. Electronic configuration of the outermost orbit of an element is 3s^(2...

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  11. Write the group number of s,p and d-block elements in periodic table.

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  12. Arrange the element with atomic number 12,17,19,23 and 25 into s,p and...

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  13. "The properties of an element depend on the electronic configuration o...

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  14. Justify the position of zero group in Mendeleev's periodic table.

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  15. (a) "Atomic number of two elements ar 9 and 17 respectively. Both elem...

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  16. How can the groups, valencies and the positions of transition elements...

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  17. Indicate the position of the element with electronic configuration (n-...

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  18. Discuss characteristics of d-block elements.

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  19. O^(2-) and F^(-) are isoelectronic. Justify whether the atomic radii o...

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  20. Write the electronic configuration of the following- (a) inert gas (b)...

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