Molecular formula of chlorophyll-b is

Options

A $\mathrm{C}_{55} \mathrm{H}_{70} \mathrm{O}_6 \mathrm{~N}_4 \mathrm{Mg}$
B $\mathrm{C}_{55} \mathrm{H}_{72} \mathrm{O}_5 \mathrm{~N}_4 \mathrm{Mg}$
C $\mathrm{C}_{55} \mathrm{H}_{70} \mathrm{O}_5 \mathrm{~N}_4 \mathrm{Mg}$
D $\mathrm{C}_{54} \mathrm{H}_{70} \mathrm{O}_6 \mathrm{~N}_4 \mathrm{Mg}$

Correct answer

A. $\mathrm{C}_{55} \mathrm{H}_{70} \mathrm{O}_6 \mathrm{~N}_4 \mathrm{Mg}$

Step-by-step solution

The molecular formula of chlorophyll-b is

\mathrm{C}_{55} \mathrm{H}_{70} \mathrm{O}_6 \mathrm{~N}_4 \mathrm{Mg}

. It helps in photosynthesis by absorbing light energy. It is more soluble in polar solvents than chlorophyll-a because of its carbonyl group. It is of yellow colour and primarily absorbs blue light.

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