Dear Student, normal or n- means that there are no branched carbon atoms...... iso- means that there is one branched carbon atom... neo- means that there are 2 branched carbon atoms.... Hope it helps. Regards.
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The prefix "iso" is used when all carbons except one form a continuous chain. This one carbon is part of an isopropyl group at the end of the chain. ... The prefix "neo" is used when all but two carbons form a continuous chain, and these two carbons are part of a terminal tert-butyl group.
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