First slide

Anomalous properties of Boron

Question

Which one of the following does not exist in the free form ?

Moderate

A

${BF}_{3}$
B

${BCl}_{3}$
C

${BBr}_{3}$
D

${BH}_{3}$

Solution

Due to back bonding ${BF}_{3}$ , ${BCl}_{3}$ and ${BBr}_{3}$ exist in free form. But ${BH}_{3}$ does not.

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