Question

which of the following molecules will use dipole-dipole attractions as an intermolecular attractive force?(i) asi3 (ii) ccl4 (iii) h2se (iv) bf3

Answer 1

Answer: H2SE

Explanation: H2SE is a polar molecule because the H-Se bond is polar due to the difference in electron negativity between H & SE atoms.

However, the molecule has a bent shape, and the dipole moments of the two H-Se bonds do not cancel each other out. Therefore, H2SE Has a permanent dipole moment,and it can experience dipole-dipole attraction.