Mendeleev's Predicted Elements - Original Predictions From 1870

Original Predictions From 1870

The four predicted elements lighter than the rare earth elements, ekaboron (Eb), ekaaluminium (Ea), ekamanganese (Em), and ekasilicon (Es), proved to be good predictors of the properties of scandium, gallium, technetium and germanium respectively, which each fill the spot in the periodic table assigned by Mendeleev. Initial versions of the periodic table did not give the rare earth elements the treatment now given them, helping to explain both why Mendeleev’s predictions for heavier unknown elements did not fare as well as those for the lighter ones and why they are not as well known or documented.

Read more about this topic:  Mendeleev's Predicted Elements

Famous quotes containing the words original and/or predictions:

    We Americans are supposed to be overly concerned about the child. But actually the intelligent care of children in our society is balanced by a crass indifference to the helplessness of infancy and youth. Cruelty to children has become more widespread but less noticed in the general unrest, the constant migration, the family disintegration, and the other manifestations of a civilization that has been torn away from its original moorings.
    Agnes E. Meyer (1887–1970)

    The Brahmins say that in their books there are many predictions of times in which it will rain. But press those books as strongly as you can, you can not get out of them a drop of water. So you can not get out of all the books that contain the best precepts the smallest good deed.
    Leo Tolstoy (1828–1910)