Question

the symmetry element that are present in BF3 are​

Answer 1

Answer:

Explanation:

Each of BF3 and NH3 possesses a 3-fold axis of symmetry, but their structures and overall symmetries are different; BF3 is trigonal planar and NH3 is trigonal pyramidal.

Answer 2

The symmetry elements present in $BF_3$ are $C_3, C_2,\sigma _v, \sigma _h$.

• The given compound is $BF_3$.
• It contains a $C_3$ axis of symmetry which rotates the molecule by 120°.
• It contains three $C_2$ axis of symmetry which rotates the molecule by 180°.
• It contains three $\sigma _v$ planes which are parallel to the major axis of symmetry.
• It contains three $\sigma _h$ planes which are perpendicular to the major axis of symmetry.