Chlorophyll b

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A yellow-green chlorophyll pigment which occurs only in plants and green algae. It functions as a light harvesting pigment that pass on the light excitation to chlorophyll a. It absorbs well at wavelength of 450-500 nm and 600-650 nm of the electromagnetic spectrum. Its molecular formula is C55H70O6N4Mg.


There are different forms of chlorophylls existing in nature. Some of them are:

They all reflect the green light but the slight differences in their structure cause them to appear in different shades of green.