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Mendeleev\'s predicted elements (Site not responding. Last check: ) |
 | | To give provisional names to these predicted elements, Mendeleev used the prefixes eka-, dvi -, and tri-, from the Sanskrit words for one, two, and three, depending upon whether the predicted element was one, two, or three or three places away from the known element in his table with similar chemical properties. |
 | | The four predicted elements lighter than the rare earth elements, ekaaluminium (symbol El), ekaboron ('''Eb'''), ekamanganese, and ekasilicon ('''Es'''), proved to be good predictors of the properties of gallium, scandium, technetium and germanium respectively, which each fill the spot in the periodic table assigned by Mendeleev. |
 | | Mendeleev had predicted an atomic weight of 68 for ekamanganese in 1871 while gallium has an atomic weight of 69.723. |
| mendeleevs-predicted-elements.iqnaut.net (350 words) |
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