The three unlabeled C atoms in the sec-butyl and tert-butyl groups in Figure A-10 are to be classified. Concept introduction: Carbon atoms in a molecule are classified on the basis of the number of other carbon atoms directly attached to it. A carbon atom is termed as a primary carbon atom when it is directly attached to only one other carbon. A secondary carbon is attached to two carbon atoms directly. A tertiary carbon has three other carbon atoms directly attached. If a carbon is attached to four other carbons, it is called a quaternary carbon.

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Chapter A, Problem A.13P

Interpretation Introduction

Interpretation:

The three unlabeled C atoms in the sec-butyl and tert-butyl groups in Figure A-10 are to be classified.

Concept introduction:

Carbon atoms in a molecule are classified on the basis of the number of other carbon atoms directly attached to it. A carbon atom is termed as a primary carbon atom when it is directly attached to only one other carbon. A secondary carbon is attached to two carbon atoms directly. A tertiary carbon has three other carbon atoms directly attached. If a carbon is attached to four other carbons, it is called a quaternary carbon.

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