Identify the correct statements from the following (i) The atomic radius of Al is lower than the atomic radius of Ga . (ii) Boron exists in many allotropic forms. (iii) The melting point of Ga is lowest among the group 13 elements.

Step-by-step solution

Boron exists in many allotropic forms. (i) -rhombohedral (ii) -rhombohedral (iii) -tetragonal in many specific condition it will exists in and -tetragonal forms. The melting point of Ga is lowest in group 13. When we go down to group melting point will increase.