A) \[BN\]
B) \[B{{F}_{3}}\]
C) \[{{B}_{2}}{{H}_{6}}\]
D) none of these
Correct Answer: A
Solution :
(i) \[BN\] is borazon or boron nitride. It exists in two crystallographic modification. The hexagonal form has a simple layer structure similar to graphite. So it is called as inorganic graphite. The other form is cubic which is very hard and acts as insulator like diamond. (ii)\[{{B}_{2}}{{H}_{6}}\] is diborane
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