hept
bute
prop
eth
Answer is Right!
Answer is Wrong!
The correct answer is B. bute.
The prefix “but” is used to name hydrocarbons with four carbon atoms. The suffix “ane” is used to name saturated hydrocarbons, which are hydrocarbons that have all single bonds between the carbon atoms. Therefore, the name of a hydrocarbon with four carbon atoms is butane.
The other options are incorrect because they do not correspond to the number of carbon atoms in the hydrocarbon. The prefix “hept” is used to name hydrocarbons with seven carbon atoms, the prefix “prop” is used to name hydrocarbons with three carbon atoms, and the prefix “eth” is used to name hydrocarbons with two carbon atoms.