Mendeleev predicted the existence of an element 'eka-silicon', later discovered and named:

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Mendeleev left gaps and predicted properties of eka-boron (scandium), eka-aluminium (gallium), and eka-silicon (germanium). Germanium was discovered in 1886, its properties matched predictions, confirming the periodic law.

Mendeleev predicted the existence of an element 'eka-silicon', later discovered and named: MCQ with Answer and Explanation

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