imported>Patrick: Created page with 'The electrons are supplied with energy $E_{supplied}$ of 8.3 eV. The electrons escaping from the sheet of lithium are observed to move with kinetic energy of 6 eV. Th…'

2011-09-16T06:51:16Z

Created page with 'The electrons are supplied with energy <math>E_{supplied}</math> of 8.3 eV. The electrons escaping from the sheet of lithium are observed to move with kinetic energy of 6 eV. Th…'

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The electrons are supplied with energy <math>E_{supplied}</math> of 8.3 eV. The electrons escaping from the sheet of lithium are observed to move with kinetic energy of 6 eV.

The electrons are bound in the metal and therefore have some energy <math>E < 0</math>. The binding energy is the absolute value value of their energy, or, <math>\left\vert E \right\vert</math>. The energy supplied to each electron is a sum of the binding energy and the kinetic energy. In symbolic terms, <math>E_{supplied} = \left\vert E \right\vert + K</math>. Substituting into this equation we get <math>8.3 = \left\vert E \right\vert + 6</math>. Therefore <math>\left\vert E\right\vert</math> = 2.3 eV. This is the binding energy of the electrons in lithium. Consequently, the energy of the electrons in lithium is <u>'''-2.3 eV'''</u>.

Satellites and Binding Energy EX 7 - Revision history

imported>Patrick: Created page with 'The electrons are supplied with energy E_{supplied} of 8.3 eV. The electrons escaping from the sheet of lithium are observed to move with kinetic energy of 6 eV. Th…'

imported>Patrick: Created page with 'The electrons are supplied with energy $E_{supplied}$ of 8.3 eV. The electrons escaping from the sheet of lithium are observed to move with kinetic energy of 6 eV. Th…'