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We have already seen what happens when you add two electrons to an atom.
When we add a third electron it cannot enter the hard shell formed by the first two electrons, and has to start a new shell outside the first one. This single electron is easily lost. Lithium atoms are like this. An atom which can lose an electron is called a reducing agent. Lithium is a powerful reducing agent. Useful LinksClick for Further information about Shell Model of Lithium Other History of the Universe Pages News about History of the Universe |
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