And is it asymmetrical or symmetrical with a polar bond or not

The hybridisation of EC =LP +BP = 3+2 = 5
[tex]\begin{gathered} Since\text{ H = 5 } \\ Hybridization\text{ = Sp}^3d \end{gathered}[/tex]We have a T- shape molecule, therefore , Molecule is polar and asymmetrical due to the T-shape