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Multiple Choice

The first four alkyl groups respectively are?

Alkyl group names follow the number of carbons in the substituent. The simplest radical comes from methane and is called methyl. Adding one carbon to form the next straight-chain alkane gives ethyl, then propyl from propane, and then butyl from butane. So the first four alkyl groups, in order of increasing carbon count, are methyl, ethyl, propyl, and butyl. (There are isomeric forms for propyl and butyl, but the basic straight-chain sequence is as stated.)

Alkyl group names follow the number of carbons in the substituent. The simplest radical comes from methane and is called methyl. Adding one carbon to form the next straight-chain alkane gives ethyl, then propyl from propane, and then butyl from butane. So the first four alkyl groups, in order of increasing carbon count, are methyl, ethyl, propyl, and butyl. (There are isomeric forms for propyl and butyl, but the basic straight-chain sequence is as stated.)