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What is modern periodic law? Mention the...

What is modern periodic law? Mention the important features of the long form of the periodic table. Why is this periodic table supposed to be superior to other periodic tables ?

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ICSE-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES-TRUE OR FALSE TYPE QUESTIONS
  1. Justify the given statement with suitable examples -"the properties of...

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  2. Why do you think the noble gases are placed in a separate group?

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  3. All groups were subdivided into A and B sub groups in Mendeleev's peri...

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  4. Mendeleev's periodic table helped in correct determination of atomic m...

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  5. What is modern periodic law? Mention the important features of the lon...

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  6. What are transition elements ? How these differ from representative el...

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  7. Find out the Value ofequilibrium constant for the following reaction a...

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  8. In the fifth period 5s, 5p and 5d shells are filled.

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  9. Isotopes of an element are placed at the same place in the long form o...

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  10. The element with Z = 11 is present in the third period.

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  11. All lanthanides are supposed to be present in group 3 of the periodic ...

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  12. Atomic radius of F is greater than that of Ne.

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  13. Al^(3+) is smaller than Ca^(2+).

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  14. Explain why : The second ionisation energy of Li is very high.

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  15. np electrons are more penetrating than ns electrons.

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  16. The electron affinity of nitrogen is zero.

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  17. The electron affinity increases in going down a group.

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  18. Melting and boiling points increase regularly in going across the seco...

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  19. Melting point of LiCI is less than that of NaCl.

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  20. CsOH is more basic than Ba(OH)(2).

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