An optically active compound:
Correct answer: C. Must always contain asymmetric carbon atom.
- A. Must contain at least four carbon atoms.
- B. When in solution rotate the plane of polarized light to the left.
- C. Must always contain asymmetric carbon atom.
- D. In solution always give a negative reading in polarimeter.
Explanation
If the compound consists of more than one carbon and contained at least one chiral carbon, it will make the compound optically active. Chiral carbon atoms are also referred to as 'stereogenic carbons' or 'asymmetrical carbon atoms'.
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About Isomerism
Isomerism occurs when compounds have the same molecular formula but different atom arrangements or spatial orientations. The content includes chain, position, functional, metameric and tautomeric isomerism, along with geometrical and optical isomerism, including cis-trans forms, E/Z notation, chirality and enantiomers.
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