The correct order of bond angles in BF 3, NH 3, NF 3 and PH 3 is

Question

The correct order of bond angles in BF 3, NH 3, NF 3 and PH 3 is (A) BF 3> NH 3> NF 3> PH 3 (B) PH 3> BF 3> NF 3> NH 3 (C) BF 3> PH 3> NH 3> NF 3 (D) NH 3> NF 3> BF 3> PH 3

Tardigrade Admin · Accepted Answer

BF3 is trigonal planar hence,

The bond angle decrease, if the electronegativity of the surrounding atom increase (VSEPR theory).

If the electronegativity of central atom decrease, bond angle decrease (VSEPR theory). NH 3> PH 3 The correct order is BF 3(120°)> NH 3(107°)> NF 3(102°)> PH 3(94°)

Q. The correct order of bond angles in $B F_{3}, N H_{3}, N F_{3}$ and $P H_{3}$ is

$B F_{3} > N H_{3} > N F_{3} > P H_{3}$

$P H_{3} > B F_{3} > N F_{3} > N H_{3}$

$B F_{3} > P H_{3} > N H_{3} > N F_{3}$

$N H_{3} > N F_{3} > B F_{3} > P H_{3}$

Q. The correct order of bond angles in BF3​,NH3​,NF3​ and PH3​ is

BF3​>NH3​>NF3​>PH3​

PH3​>BF3​>NF3​>NH3​

BF3​>PH3​>NH3​>NF3​

NH3​>NF3​>BF3​>PH3​

Q. The correct order of bond angles in $B F_{3}, N H_{3}, N F_{3}$ and $P H_{3}$ is

$B F_{3} > N H_{3} > N F_{3} > P H_{3}$

$P H_{3} > B F_{3} > N F_{3} > N H_{3}$

$B F_{3} > P H_{3} > N H_{3} > N F_{3}$

$N H_{3} > N F_{3} > B F_{3} > P H_{3}$