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What is secondary...iso....tertiary....and neo?

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Prefix iso is used for those alkanes in which one methyl group is attached to the next to end carbon atom (second last) of the continuous chain.

Example:  CH3CH(CH3) - CH2CH3

                              isopentane  

 

Prefix neo is used for those alkanes in which two methyl groups are attached to the next to end carbon atom (second last) of the continuous chain.

Example: CH3C(CH3)2 - CH3

                       neopentane 

 

The prefix "tert" or "t" is used when the functional group is bonded to a tertiary carbon.
Example:  

                        

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lovekush

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