Question

Question #c241d

Answer 1

Got model set....?

Explanation:

When we draw a Newmann projection, we look DOWN a `C-C` bond axis..... And in pentane there are 4 such `C-C` bond axes. So we would have to consider each bond in isolation....where each bears TWO `C-H` bonds, and the third spoke of the wheel on one carbon is the alkyl residue....

For more details see ....`"Newman, M. S. A notation for the study of certain"`
`"stereochemical problems. "`J. Chem. Educ. 1955 , 32 , 344-347.

Your librarian will certainly be able to get this for you.

Of course this is for butane, not methyl pentane....but it is easier to work and draw from a model.