The range of a visible wavelength is a 200 to 300 nm
b 50 to 250 nm
C С
400 to 700 nm
d 800 to 950 nm

Pentane with molecular formula c5h12, exists in three isomeric forms. one shows linear carbon chains, another has one -ch3 groups present on the third carbon atom, and the third has two -ch3 groups present on the second carbon atom. what types of isomers are these? a. geometric isomers b. structural isomers c. halotropic isomers