The Following Ball-And-Stick Molecular Model Is a Representation of the Amino

question 155

Multiple Choice

The following ball-and-stick molecular model is a representation of the amino acid alanine (unshaded spheres = H) .Only the connections between atoms are shown;multiple bonds and nonbonded electrons are not indicated.
-In order to complete an electron-dot structure of alanine,the nitrogen atom needs

• A)1 additional bond and 1 nonbonded pair of electrons.
• B)1 additional bond and 2 nonbonded pairs of electrons.
• C)1 nonbonded pair of electrons.
• D)2 nonbonded pairs of electrons.

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