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Q. Consider following statements:
I: In diamond, each carbon atom is linked tetrahedrally to four other carbon atoms by $sp^{3}$ bonds
II: Graphite has planar hexagonal layers of carbon atoms held together by weak van der Waals forces
Ill: Silicon exists only in diamond structure due to its tendency to form $p \pi-p \pi$ bonds to itself

The p-Block Elements

Solution:

Correct answer is (d) All are correct statement