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CBSE Class 11-science Answered

What do the terms ortho-, meta or para- stand for?
Asked by Topperlearning User | 01 Jun, 2016, 14:14: PM
answered-by-expert Expert Answer

The aromatic compounds containing the two groups at the adjacent positions, i.e. the 1,2-positions are called ortho, denoted as 'o-'.
The aromatic compounds containing the two groups at the alternate positions, i.e. the 1,3-positions are called meta, denoted as 'm-'.
The aromatic compounds containing the two groups at the diagonal positions, i.e. the 1,4-positions are called para-, denoted as 'p-'.

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