Question

Be sure to answer all parts.

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

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It gained considerable notoriety in 2004 when it was implicated in the attempted murder of a Ukrainian politician.

(a) Select the statements that describe its geometry, and whether or not the molecule has a dipole moment.
The oxygen atoms are sp2 hybridized and the molecule is planar.
THIS ONE IS CORRECT- The oxygen atoms are sp3 hybridized and the molecule is planar.
The oxygen atoms are sp3 hybridized and the molecule is not planar.
The molecule is polar.
THIS ONE IS ALSO CORRECT- The molecule is not polar.

(b) How many pi bonds and sigma bonds are there in the molecule?

6 pi bonds

24 sigma bonds

Answer 1

TCDD has oxygen atoms that are sp3 hybridized and the molecule is planar; it is nonpolar with no dipole moment. It contains 6 pi bonds and 24 sigma bonds.

Step-by-step explanation:

The compound 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) is a highly toxic substance with a specific structure and geometric properties. To address the first part of the question:

• The oxygen atoms are sp3 hybridized and the molecule is planar.
• The molecule is nonpolar, meaning it does not have a dipole moment.

For the second part regarding π (pi) and σ (sigma) bonds in TCDD:

• There are 6 π bonds within the molecule.
• There are 24 σ bonds in the molecule, considering single bond interactions between atoms.