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Eka means  undiscovered elements , Mendeleev given the name is  gallium to its discovery, from the fact that it lies below aluminium in the periodic table,Mendeleev described what the element would be like. He based his prediction on elements on all sides of the box for element number 31. He said it would be similar to aluminum  and indium He named this missing element eka-aluminum....

hope its help  u

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