Electrons crazy behaviour
[From: ] [author: ] [Date: 11-07-09] [Hit: ]
they occupy specific orbitals within each energy level and these orbitals are arranged to kept the electrons well separated.The electrons in the outermost energy level are more weakly held since they are the further est away from the positive charges in the nucleus.In metals these outer electrons are so weakly held that the positive charge in the nucleus of neighboring atoms can disturb them and knock them out of orbit around that atom, making them free.Even though electrons are negative and repel each other the free electrons are moving too fast to avoid colliding.-Free electrons are electrons in the conduction band of metals.......
Next, electrons don't "hit" each other and "bounce off" each other. Electrons don't actually "touch" each other because of the repulsion that you correctly identified. Electrons do not behave one way in one situation and another in another situation. Electrons have a particular set of properties and these properties are consistent.
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When electrons are in the atom, they occupy specific orbitals within each energy level and these orbitals are arranged to kept the electrons well separated. The electrons in the outermost energy level are more weakly held since they are the further est away from the positive charges in the nucleus. In metals these outer electrons are so weakly held that the positive charge in the nucleus of neighboring atoms can disturb them and knock them out of orbit around that atom, making them "free". Even though electrons are negative and repel each other the free electrons are moving too fast to avoid colliding.
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"Free electrons" are electrons in the conduction band of metals. That is to say that electrons in metals are not bound to any particular atom, but constitute what is sometimes referred to as a "sea of electrons". Because of this property, they can easily move from one atom to another.
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Electrons in 'shells' around the atomic nucleus are attracted by the core of the atom which contains Positive charge called Protons.
If the atom has (say) 8 Protons & 9 Electrons, 8 electrons 'balance out' the protons leaving one electron 'free'
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yh quantum physics is always like that
