Question

$ N{{F}_{3}} $ and $ B{{F}_{3}} $ both are covalent, but $ B{{F}_{3}} $ is non-polar, while $ N{{F}_{3}} $ is polar because

• A. boron is non-metal in free state, while $ {{N}_{2}} $ is gas
• B. there is no dipole moment in $ B-F $ bond while $ N-F $ bond have some dipole moment
• C. $ B{{F}_{3}} $ is planar while $ N{{F}_{3}} $ is pyramidal
• D. boron atom is smaller than nitrogen atom

Answer 1

Answer: (B)

$ N{{F}_{3}} $ and $ B{{F}_{3}} $ both are covalent but $ B{{F}_{3}} $ is non polar, while $ B{{F}_{3}} $ is polar because there is no dipole moment in BF bond while NF bond have some dipole moment.