Eka silicon is now called as

WWF is now called

Eka silicon is now known as

Eka-aluminium and Eka -silicon are known as :

Eka-aluminium and Eka -silicon are known as :

Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as : Assertion (A) : Mendeleev' left the gap under aluminium and silicon and called these Eka-aluminium and Eka-silicon, respectively. Reason (R) : Dobereiner arranged elements on the basis of increasing atomic number.

Silicon hydrides are called