Question

Which of the following does not exist in free form?

• A. $BF_3$
• B. $BH_3$
• C. $BCl_3$
• D. $BBr_3$

Answer 1

Answer: (B)

$BH_3$

Answer 2

Boron forms hydrides with general formula $B_nH_{n+4}$ but $BH_3$ exists as $B_2H_6$.