Draw the structure of orthoboric acid. Why it is not a protonic acid?

Draw the structure of boric acid,

Draw the structure of perchloric acid (HClO_4)

Draw the structure of 2-propanone.

Draw the structure of the amino acid, alanine.

Which of the following is not a protonic acid?

Borax, orthoboric acid and diborane are some useful compounds of boron Boric acid Is not a protonic acid but acts as a Lewis acid. Justify.

Orthoboric acid, H_3BO_3 is a