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lanthanide contraction |
Also found in: Wikipedia | 0.03 sec. |
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lanthanide contraction [′lan·thə‚nīd kən‚trak·shən] (atomic physics) A phenomenon encountered in the rare-earth elements; the radii of the atoms of the members of the series decrease slightly as the atomic numbers increase; starting with element 58 in the periodic table, the balancing electron fills in an inner incomplete 4ƒ shell as the charge on the nucleus increases. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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