Click the mouse on the molecule to view the answer;
click on the button to view the parent chain and the correct numbering sequence.
2-bromo-2-methylpropane
The propane chain is the parent with the bromine bonded to carbon #2.
1,2-dimethyl-3-nitrocyclopentane
The cyclopentane is the parent; the lowest number sequence is generated starting with the methyl group and proceeding clockwise; the methyl- has higher priority than the nitro-group alphabetically.
2-(2-chloroethyl)-5-ethyl-
1,1-dimethylcyclohexane
The cyclohexane is the parent; the lowest number sequence is generated when the geminal dimethyl group is carbon #1, and proceeding counter-clockwise.