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How would you justify the presence of 18...

How would you justify the presence of 18 elements in the `5th` period of the Preodic Table ?

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The `5^th` period of the periodic table bagins with the element in which 5s orbital starts filling. It must end with the compietion of 5p orbitals. The order in which the energy of the available orbitals increasses is `5s < 4d < 5p`.
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A N EXCEL PUBLICATION-CLASSIFICATION TO ELEMENTS AND PERIODICITY IN PROPERTIES-QUESTION BANK
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  2. How would you justify the presence of 18 elements in the 5th period of...

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  4. Which of the following species will have the largest and the smallest ...

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  5. Which of the following will have the most negative electron gain enth...

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

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

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

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

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

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

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

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

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

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  15. What do you mean by isoelectronic species ?

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  16. Name the species that will be isoelectronic with Ar

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

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

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

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

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