Coding for branched chains

2 marks · Normal

State the coding for the following side chains used in organic nomenclature:

(a)

A one-carbon branch

[1 mark]

(b)

A two-carbon branch

[1 mark]

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(a) methyl

(b) ethyl

Common mistakes: writing 'methane' and 'ethane' instead of 'methyl' and 'ethyl'

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Marking points

B1 (a) · 1 mark · States 'methyl' for a one-carbon branch.

B1 (b) · 1 mark · States 'ethyl' for a two-carbon branch.

Worked solution

a) A one-carbon side chain is called 'methyl'.

b) A two-carbon side chain is called 'ethyl'.