Which of the following is not a use of Boron?

What is the colour of silicon?

The metallic character of ______ is less than that of alkaline earth metals.

When aluminium ions replace silicon ions and silicon dioxide what is it called?

The atomic radius of gallium is greater than that of aluminum.

Which of the following is not a use of orthoboric acid?

Which of the following allotropes of carbon are hard in nature?

How many types of oxides do Carbon family form?