Created at 10:47 p.m. Mar, 14, 2026
Author:
lion_kgs
Type of change:
Content error
Rationale for change
The card definition originally being "number of protons on adjacent carbons" is a little misleading as these may not be within the same chemical environment. A better definition for n would be equivalent protons. I also changed some of the bolding/italics/underlining but thats just for my own improved recall.
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The multiplicity of a proton or a group of protons is given by the n+1 rule, where n = the number of protons on the adjacent carbon atom (or atoms)

| n | n+1 | multiplet name | intensity pattern |
| 1 | 2 | doublet | 1:1 |
| 2 | 3 | triplet | 1:2:1 |
| 3 | 4 | quartet | 1:3:3:1 |
| 4 | 5 | quintet | 1:4:6:4:1 |
| 5 | 6 | sextet/hextet | 1:5:10:10:5:1 |
| 6 | 7 | septet/heptet | 1:6:15:20:15:6:1 |

Lecture Notes
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Missed Questions
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Pixorize
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Sketchy
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Additional Resources



One by one
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