Vitamin b is composed of how many compounds?
a. 1

b. 6

c. 8

d. 12

Vitamin B is composed of C. 8 compounds. Here they are:
- vitamin B1 is called thiamine
- vitamin B2 is called riboflavin
- vitamin B3 are niacin, nicotinic acid, nicotinamide riboside
- vitamin B5 is pantothenic acid
- vitamin B6 are pyridoxine, pyridoxal, pyridoxamine
- vitamin B7 is biotin
- vitamin B9 is folic acid
- vitamin B12 are cobalamins

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Determine the  wavelength of light emitted when an electron  in an li2+ ion  makes a transition from an orbital with n  =  6 to an orbital with n  = 5.