Question

The bond angle of NH3 is more than PH3 and NF3?​

Answer 1

yes itz becoz in NH3 4 electrrrron pairs exist (3 bp and 1 lp) in outermost shell of N atom so repulsion bw bp and lp is > that of bp bp

#didugetit?

Answer 2

Explanation:

when we consider NH3 and PH3, central atoms are N and P respectively.......both are bonded with H so we focus on central atom

we know that N has greater electronegativity than P to attract shared pair of electron ,so in case of N, electron density is more towards N than in the case of P. Thus there is more electronic repulsion in NH3 which results in greater bond angle.

when we consider NH3 and NF3

both have N at centre. so we focus on terminal atom. we know that F has greater electronegativity than H. so the electron density in case of NF3 is more away from N than in the case of NH3. this results smaller bond angle in NF3. so NH3 has greater bond angle.