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The elecron affinity of chlorine is 3. 7...

The elecron affinity of chlorine is `3. 7 eV`. How much energy in kcal is released when `2g` chlorine is completely converted to `cl^-` ion in a gaseous state ?
`(1 eV = 23. 06 kcal "mol"^(-10))`.

Text Solution

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`Cl + e ^(-) to Cl ^(-) + 3.7 eV`
` 35.5" "3.7 xx 23. 0.6` kcal
`therefore` Energy released for conversion of 2 g gaseous chlorine into `Cl^(-)` ions
`= (3.7 xx 23.06)/(35.5) xx 2=4.8` kcal
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MOTION-PERIODIC TABLE -Exercise - 4 | Level-II
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  3. The increasing order of electronegativity in the following elements :

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  5. Number of paired electrons in O(2) molecule is .

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  6. The decreasing size of K^(+) , Ca^(2+) , Cl^(-) & S^(2-) follows the o...

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  7. Which of the following oxide is neutral ?

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  8. Which of the following has the maximum number of unpaired electrons ?

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  9. The following acids have been arranged in order of decreasing acid str...

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  10. The incorrect statement among the following is : (A)

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  11. Which of the following are amphoteric ?

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  12. Li^(+),Mg^(2+),K^(+),Al^(3+) (Arrange in increasing order of radii)

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  13. Anhydrous AlCl(3) is covalent . From the data given below predict whet...

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  14. Which one of the following statement (s) is (are) correct ? (A) Th...

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  15. Statement-1 : F arom has a less negative electron gain enthalpy than C...

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  16. Al(OH)(3) is amphoteric is nature. Al-O and O-H bonds can be borken ...

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  17. The correct order of radii is

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  18. The correct order of acidic strength is

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  19. The IE(1) of Be is greater than that of B. [T/F]

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  20. The set representing correct order of IP(1) is

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  21. Identify the least stable ion amongst the following:

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