Chemistry · Computational Chemistry
Analyze the following statements regarding semi-empirical methods: (a) AM1 and PM3 C-H bond lengths tend to be longer than experimental values by approximately 0.004-0.025 Å (AM1) or 0.002 Å (PM3). (b) Of AM1 and PM3, neither has a clear overall advantage over the other in predicting geometry. Which of the following is correct?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Only (b) is true
- 2Only (a) is true
- 3Both (a) and (b) are false
- 4Both (a) and (b) are true and (b) explains (a)✓
Correct answer
Both (a) and (b) are true and (b) explains (a)
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