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Organic Chemistry | 2nd Edition | ISBN: 9781118454312 | Authors: David R. Klein
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Amino acids are biological compounds with the following

Chapter 2, Problem 2.19

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QUESTION:

Amino acids are biological compounds with the following structure,where the R group can vary. The structure and biological functionof amino acids will be discussed in Chapter 25. Identify the total numbof lone pairs present in an amino acid, assuming that the R groupdoes not contain any atoms with lone pairs.(a)ON! H (b) O C N@ (c) O N O! (d)NO ! O @ (e) NH2OONH3@

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QUESTION:

Amino acids are biological compounds with the following structure,where the R group can vary. The structure and biological functionof amino acids will be discussed in Chapter 25. Identify the total numbof lone pairs present in an amino acid, assuming that the R groupdoes not contain any atoms with lone pairs.(a)ON! H (b) O C N@ (c) O N O! (d)NO ! O @ (e) NH2OONH3@

ANSWER:

Step 1 of 2

For heteroatoms, they should have four items attached — either bonds or lone pairs. The nitrogen has four bonds, so it should have no lone pairs. The first oxygen has two bonds, so it should have two lone pairs.

 

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