The compound TCDD, or 2, 3, 7, 8-tetrachlorodibenzo-p dioxin, is highly toxic: I

Question

The compound TCDD, or 2, 3, 7, 8-tetrachlorodibenzo-p dioxin, is highly toxic: It gained considerable notoriety in 2004 when it was implicated in the attempted murder of a Ukrainian politician. Select the statements that describe its geometry, and whether or not the molecule has a dipole moment. The oxygen atoms are sp^2 hybridized and the molecule is planar. The oxygen atoms are sp^3 hybridized and the molecule is planar. The oxygen atoms are sp^3 hybridized and the molecule is not planar. The molecule is polar. The molecule is not polar. How many pi bonds and sigma bonds are there in the molecule?

Explanation / Answer

The Correct answers are Option B and Option E

The molecule is planar because of the two benzene rings fused , the oxygen atoms are in sp3 hybridization, hence b is the correct answer

There are four CO and Cl bonds but every dipole is getting cancelled because of equal and opposite moments generated

Hence the molecule is non-polar

b) Number of sigma bonds are equal to 20

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