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Class 12 Tuition > Learn Chemistry > Among halogens, the correct order of amount of energy...
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Among halogens, the correct order of amount of energy released in electron gain (electron gain enthalpy) is
(a) F > Cl > Br > I
(b) F < Cl < Br < I
(c) F < Cl > Br > I
(d) F < Cl < Br > I

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Specialist in Chemistry.

Answer is C as due to interelectronic repusion and small size F has less negative electron gain enthalpy than Cl
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C,is the correct answer,as chlrione is having more than fluorine ,as small size of F, so there is interelectronic repulsion in it so less than chlorine.
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Physics lover ,Chess player , love to study physics all the time

Energy is released when an electron is added to the atom. Therefore, the electron gain enthalpy is negative. The electron gain enthalpy for halogens is highly negative because they can acquire the nearest stable noble gas configuration by accepting an extra electron. Btw the sequence is. F>cl>br>I Because...
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  • Energy is released when an electron is added to the atom. Therefore, the electron gain enthalpy is negative.
  • The electron gain enthalpy for halogens is highly negative because they can acquire the nearest stable noble gas configuration by accepting an extra electron.
  • Btw the sequence is.  F>cl>br>I

Because the florine electrons are more strongly bounded to it in comparison to other halogens due to its small compact size

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Specialist in Chemistry.

And is C
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C option is correct
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Answer is (c)
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Tutor

C
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