Single Choice

The electron gain enthalpies of halogens in K J $$ mol ^{-1}$$ are as given below F=-332 , Cl=-349 , Br=-324 , I =-295 . The less negative value for F as compared to the of Cl is due to:

AStrong electron electron repulsions in the compact 2p sub shell of F
BWeak electron electron repulsions in the compact 3p sub shell of Cl
CSmaller electronegativity value of F than Cl
D(A) & (B) both
Correct Answer

Solution

Due to small size of F atom ,the electron-electron repulsions in compact 2p sub shell are large and hence the incoming electron is not accepted with the same ease as is the case with CI (less electron repulsions )

Option D is correct.

SIMILAR QUESTIONS

p - block Elements

Which has a lowest electron affinity among the following?

p - block Elements

Which is the correct arrangement of the compounds based on their bond strength?

p - block Elements

The property of halogens which is not correctly matched is:

p - block Elements

Match the column I with column II and mark the appropriate choice. Column I Column II (A) $$H_{2}SO_{4}$$ (i) Highest electron gain enthalpy (B) $$CCl_{3}NO_{2}$$ (ii)Chalcogen (C) $$Cl_{2}$$ (iii) Tear gas (D) Sulphur (iv) Storage batteries

p - block Elements

Explain the following : Halogens have a high electron affinity.

p - block Elements

Arrange the elements of group $$ 17 $$ and group $$ 1 $$ according to the given conditions. Increasing electron affinity

p - block Elements

Which of the elements has the maximum electron affinity

p - block Elements

Which of the following arrangements for the three halogens $$Cl, Br$$ and $$I$$ when placed in the order of their increasing electron affinity is correct?

p - block Elements

Which of the elements has the maximum electron affinity

p - block Elements

Order of electron affinity of F,Cl,Br and I is...

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