QNO.7
QNO.7 Molecular size of ICl and Br2 is nearly same but boiling point of ICl is about 400C higher than Br2. T might be due to I — Cl bond is stronger than Br — Br bond (B) Ionisation energy of I < ionization energy of Br ICl is polar whereas Br2 is non—polar (D) Size of I > size of Br

Dear Student,
The answer is C
ICl is a polar molecule.
Reasons: As Cl is more electronegative than I; the difference in electronegativity creates the strong dipole-dipole interaction in ICl molecule. This strong dipole-dipole interaction caused increase in boiling point of ICl molecule over Br2.

Please let me know, if you have any further doubts.

​​​​​Regards

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