Final answer:
The molecule in question is (r)-2-chlorobutane. To determine the configuration of the molecule, we need to assign the priorities to the substituents attached to the chiral carbon (carbon with four different groups attached). The lowest priority is pointing away from us, so the configuration is (r).
Step-by-step explanation:
The molecule in question is (r)-2-chlorobutane. To determine the configuration of the molecule, we need to assign the priorities to the substituents attached to the chiral carbon (carbon with four different groups attached). In this case, the priority is based on the atomic number, with chlorine having the highest priority, followed by the two methyl groups, and then hydrogen as the lowest priority. By visualizing the molecule, if the lowest priority (hydrogen) is pointing away from us, the configuration is (r). If the lowest priority is pointing towards us, the configuration is (s). In this case, the lowest priority is pointing away from us, so the configuration is (r).