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Give any two features of Mendeleev's per...

Give any two features of Mendeleev's periodic table.

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(i) It was based on atomic mass (ii) It has places for undiscovered elements.
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SUBHASH PUBLICATION-CLASSIFICATION OF ELEMENTS AND PERIODICITY IN PROPERTIES -TWO marks questions and answers
  1. Why are group I elements called alkali metals and group 17 are called ...

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  2. Give four characteristics of d-block elements.

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  3. Give any two features of Mendeleev's periodic table.

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  4. How does the solubility of a solute vary with increase in temperature ...

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  5. Why is melting point of LiCl lower than NaCl ?

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  6. Arrange the following in increasing order : BeCO(3),BaCO(3),CaCO(3),...

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  7. Arrange the following in increasing order : BeCl(2),BaCl(2),SrCl(2),...

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  8. Which alkali metal carbonate is thermally unstable and why ?

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  9. Out of O and S which has higher negative electron gain enthalpy and wh...

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  10. Predict which atom in each of the following Period has the highest fir...

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  11. Among the elements Li, K,Ca, S and Kr , which one is expected to have ...

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  12. Among the elements of the third period Na to Ar pick out the element: ...

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  13. Among the elements of the third period Na to Ar pick out the element: ...

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  14. Among the elements of the third period Na to Ar pick out the element: ...

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  15. Among the elements of the third period Na to Ar pick out the element: ...

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  16. Name a species that will be isoelectronic with each of the following a...

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  17. Name a species that will be isoelectronic with each of the following a...

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  18. Name a species that will be isoelectronic with each of the following a...

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  19. Name a species that will be isoelectronic with each of the following a...

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  20. Arrange the following ions in the increasing order of their size: Be^(...

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