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Generally electron gain enthalpy on goi...

Generally electron gain enthalpy _____________ on going down a group, and _____________ on going across the period from left to right.

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Decreases, increases.
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The tendency to gain electron _____ on going from top to bottom in a group of the periodic table.

Assertion: Electron gain enthalpy always becomes less negative as we go down a group in Modern periodic table. Reason: The size of the atom increase on going down the group in Modern periodic table and the added electron would be farther from the nucleus.

CENGAGE CHEMISTRY-APPENDIX - INORGANIC VOLUME 1-Exercise very short
  1. Among Li,Na,K,Rb,Cs, the element with the lowest ionisation energy is ...

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  2. Electron Gain Enthalpy

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  3. Generally electron gain enthalpy on going down a group, and on going...

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  4. Why is the second electron gain enthalpy negative (i.e. energy is abs...

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  5. Why fluorine has lesser electron gain enthalpy than chlorine?

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  6. Isoelectronic species have the same number of .

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  7. Lanthanides and actinides belong to block of the periodic table.

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  8. Generally, the atomic size along a period gradually decreases due to i...

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  9. The formula for fluoride of carbon is .

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  10. The solubility of alkali metal carbonateas one goes down the group.

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  11. The electronic configuration of Re^(3+) is (Xe)4f^(14)5d^(4), the numb...

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  12. Lother Meyer atttempts to classify the elements by plotting graph betw...

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  13. Second period ends with .

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  14. The first transition series is called transition series.

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  15. Why do alkali metals have lowest ionisation energy?

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  16. Why are lanthanides and actinides place at the bottom of the periodic ...

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  17. How do the basicity and solubility in water vary from Be(OH)(2) to Ba(...

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  18. Why are cations smaller than neutral atom?

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  19. Why are anions bigger than neutral atom?

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  20. Which is the smallest among Na^(o+),Mg^(2+),Al^(3+), and why?

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