Which of the following element exhibits + 3 Oxidation State only?

Is catenation possible in carbon?

Do Boron and silicon react with electropositive metals?

Talcum powder has a slippery touch.

Boron is used as a __________

Which of the following is true regarding the acidic character?

The complete combustion of diborane is ________

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