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Using the periodic Table, predict the fo...

Using the periodic Table, predict the formulas of compounds which might be formed by the following pair of elements, aluminium and sulphur.

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`Al_2S_3`
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A N EXCEL PUBLICATION-CLASSIFICATION TO ELEMENTS AND PERIODICITY IN PROPERTIES-QUESTION BANK
  1. Which of the following will have the most negative electron gain enth...

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  2. Using the periodic Table, predict the farmulas of compounds which migh...

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  3. Using the periodic Table, predict the formulas of compounds which migh...

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  4. Are the oxidation state and covelency of Al in [AlCl (H2O)5]^(2+) same...

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  5. On the basis of quantum numbers justify that the sixth period table sh...

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  6. In terms of period and groups where would you locate the element with ...

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  7. Write the atomic number of the element in the third period and group 1...

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  8. Which element do you think would have been named by Lawrence Berkele...

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  9. Which element do you think would have been named by Seaborg's group.

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  10. Why do elements in the same group have similar properties ?

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  11. What do you mean by isoelectronic species ?

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  12. Name the species that will be isoelectronic with Ar

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  13. Name the species that will be isoelectronic with Mg^(2+)

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  14. Name the species that will be isoelectronic with Rb^+

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  15. N^(3-),O^(2-),F^-,Na^+, Mg^(2+),Al^(3+) what is comman in them ?

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  16. N^(3-),O^(2-),F^-,Na^+, Mg^(2+),Al^(3+) Arrange them in the order of ...

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  17. Energy of an electron in the ground state of hydrogen atom is -2.18 xx...

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  18. Among the second period elements the actual ionisation enthaply are in...

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  19. Among the second period elements the actual ionisation enthaply are in...

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  20. How would you explain that the first ionisation energy of Na is lawer ...

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