CHM 2045 Chapter Notes - Chapter 2: Aufbau Principle, Electron Affinity, Uncertainty Principle
24 Feb 2014
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An atom usually carries a neutral charge unless it has loss or gained an electron. Demonstrated the existence of opposite charges in an atom and that charge is a fixed quantity. Thomson observed when he applied an electric field perpendicular to the electron beam, he could deflect tit by the exact amount each time i. The magnitude of deflection depend on the strength of the field and the mass of the electron c. d. e. Because the arc fo the deflection was constant, thomson concluded that electrons have a fixed charge to mass ratio. Because the direction of the deflection changed when the orientation of the field changed, Thomson concluded that there must be two types of charge that oppose one another. Produces a spectra of the masses of the molecules comprising a sample of material i. Measure the charge to mass ratio of a charged particle b.
