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An experimentalist's reply to "What is an atom in a molecule?"
Chérif F Matta1, Richard F W Bader
1Department of Chemistry, Dalhousie University, Halifax NS B3H 4J3, Canada.
The Journal of Physical Chemistry. A
|May 12, 2006
Summary
Experimental chemistry provides evidence that molecular properties arise from atomic contributions. This study asserts that chemists directly measure atomic properties during experiments, challenging purely intellectual concepts of atoms.
Area of Science:
- Quantum Chemistry
- Physical Chemistry
- Theoretical Chemistry
Background:
- The philosophical concept of an atom in a molecule is debated, with some viewing it as an abstract intellectual construct.
- Conversely, experimental chemistry traditions suggest that the properties of a molecular system are the sum of its constituent atomic properties.
Purpose of the Study:
- To address the debate on the nature of the atom in a molecule.
- To reconcile theoretical viewpoints with experimental evidence in chemistry.
Main Methods:
- Review of historical experimental chemistry principles.
- Analysis of the relationship between molecular properties and atomic contributions.
Main Results:
- Experimental data supports the view that molecular properties are additive from atomic contributions.
- The practice of experimental chemistry inherently involves measuring atomic properties.
Conclusions:
- Experimentalists can confidently ascertain atomic properties through empirical measurements.
- The tangible, measurable nature of atomic properties in experiments is affirmed.
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