tiles


Note:  Do not rely on this information. It is very old.

Eka

Eka, -boron, -aluminium, names applied by Mendeleef to elements, then undiscovered, but whose existence, on the basis of the Periodic Law (q.v.), he predicted and described. The first was recognised in the element Scandium and the second in Gallium, both of which were discovered a few years after Mendeleef's prediction.