- Exam
- JEE Main
- Year
- 2023
- Date
- 12 April
- Shift
- Morning Shift
- Subject
- Chemistry
- Chapter
- p Block Elements (Group 13 & 14)
JEE Main 2023 · 12 April · Morning Shift · Chemistry · p Block Elements (Group 13 & 14)
Given below are two statements: Statement I: Boron is extremely...
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
Options
- ABoth Statement I and Statement II are incorrect
- BStatement I is correct but Statement II is incorrect
- CBoth statement I and Statement II are correct
- DStatement I is incorrect but Statement II is correct
Correct answer
C. Both statement I and Statement II are correct
Step-by-step solution
Boron is extremely hard as it exists as icosahedral molecular units which accounts for its high lattice energy. So, statement-I is correct.
Due to small atomic size boron forms strong covalent bonds with the neighbouring atoms. Thus, boron atoms are closely packed in its solid, thus boron has high melting and boiling points. So, statement-II is also correct.