Build two models of chlorocyclohexane. On one model, replace the hydrogen labeled $H_a$ with a chlorine atom to make model A; on the other model, replace the hydrogen labeled $H_b$ to produce model B$.$ Now place both models in the chair conformation.

What is the configuration of each chirality center?

A$?$

$B?$

C$?$

R$)S$

D$?$

$($R$)S$

What is the stereochemical relationship between models A and B$?($Circle your answer$)$

$\backslash$table$[[$identical$,$diastereomers,meso$]]$

Using the templates provided, draw the planar representation $($use wedges and dashes!$)$ and both chair conformations of the models of $1,2-$dichlorocyclohexane in the table below.

Is one chair conformer lower in energy?

If so$,$ circle the appropriate conformer$($s$)$ above.

Are the two chlorine atoms cis$-$or trans$-$ to each other?

trans

Can both chlorine atoms be axial in any chair conformation?

$72$