Q40) Empirical formula of chlorophyll -a is _________ . 1. C55H72O4N5Mg 2. C72H55O5N4Mg 3. C55H70O5N4Mg 4. C55H72O5N4Mg
Q40) Empirical formula of chlorophyll -a is _________ . 1. C55H72O4N5Mg 2. C72H55O5N4Mg 3. C55H70O5N4Mg 4. C55H72O5N4Mg

Correct option: 4

Explanation: Empirical formula of chlorophyll -a is C55H72O5N4Mg. The chlorophyll molecule consists of a central magnesium atom surrounded by a nitrogen containing structure called as porphyrin ring.