Question

Eka-silicon is called?

Answer 1

germanium is eka-silicon and gallium is eka-aluminium, germanium and gallium were'nt discovered at that time so he named them eka-silicon and eka-aluminium coz their properties are quite similar to silicon and aluminium....hope this helps you :D

Answer 2

According to Mendeleev's periodic table
Eka-Silicon is Germanium