Bond length vs bond order (Higher bond order → shorter bond, larger stretching force constant)
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Higher bond order → shorter bond, larger stretching force constant
What each symbol means
| Symbol | What it stands for |
|---|---|
| k | Force constant (spectroscopy) |
| r | Bond length |
| BO | Bond order |
When to use this
Trend: C≡C < C=C < C–C in length.