Question

Given below are two statements :

Statement I: Boron is extremely hard indicating its high lattice energy

Statement II: Boron has highest melting and boiling point compared to its other group members.

In the light of the above statements, choose the most appropriate answer from the options given below :

(1) Statement I is incorrect but Statement II is correct

(2) Both Statement I and Statement II is correct

(3) Statement I is correct but Statement II is incorrect

(4) Both Statement I and Statement II is incorrect

Answer 1

(2) Both Statement I and Statement II is correct

Boron is non- metallic in nature. It is extremely hard and black coloured solid. It exists in many allotropic forms. Due to very strong crystalline lattice, boron has unusually high melting point and boiling point.