Tryptophan is one of the amino acids found in proteins:CHCHCHCCHCHCHHCHOHCONHHCNHCPredict the ⚊C⚊NH bond angle for the nitrogen outside of the ring structure. Select the single best answer.
Question
Tryptophan is one of the amino acids found in proteins:CHCHCHCCHCHCHHCHOHCONHHCNHCPredict the ⚊C⚊NH bond angle for the nitrogen outside of the ring structure. Select the single best answer.
Solution
The bond angle for the nitrogen outside of the ring structure in Tryptophan can be predicted based on the molecular geometry. The nitrogen atom is bonded to two other atoms and has one lone pair of electrons. This arrangement is known as "bent" or "V-shaped" and is typical for molecules where the central atom has two bonded atoms and one lone pair. The bond angle for this type of arrangement is approximately 120 degrees. However, due to the presence of the lone pair, which occupies more space than a bonding pair, the bond angle is likely to be slightly less than 120 degrees. Therefore, the best prediction for the ⚊C⚊NH bond angle for the nitrogen outside of the ring structure in Tryptophan is slightly less than 120 degrees.
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