Question

what is eka silicon and eka germanium?

Answer 1

Answer:

one silicon and one germanium...

Answer 2

In large part, the success of the Mendeleev's analysis can be attributed to the gaps which he predicted would contain undiscovered elements with predictable properties. Mendeleev named these unknown elements using the terms eka, dvi & tri.

Eka-boron (scandium)

Eka-aluminium (gallium)

Eka-manganese (technetium)

Eka-silicon (germanium).

Hence eka silicon is called germanium.