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Question 47(a) Mendeleev predicted the existence of certain elements not known at that time and named two of them as Eka-Silicon and Eka-Aluminium. Name the elements which have taken the place of these elements. |
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Answer» Question 47(a) Mendeleev predicted the existence of certain elements not known at that time and named two of them as Eka-Silicon and Eka-Aluminium. Name the elements which have taken the place of these elements. |
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