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Variation of Electronegativity

is group 2 el...

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is group 2 elements have +ve electron gain enthalpy ? if it is then why?

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Q. Define electron gain enthalpy. Explain, why electron gain enthalpies of some elements are positive? How does electron gain enthalpy vary in the group and in a period?

15

elements have more electron gain enthalpy than group

16

elements. The correct reason for this is:

Q. Electron gain enthalpy of

17 t h

group elements are

- 349, - 328, - 325, - 296, - 270 k J / m o l

(not in order). The element which has electron gain enthalpy

- 296 k J / m o l

The element having very high ionization enthalpy but zero electron gain enthalpy is

Why does the first ionization enthalpy is have higher electron gain enthalpy

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Variation of Electronegativity

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