Is SeF4 sp3 hybridised?

The steric number for the SeF4 molecule is 5 and the hybridization state is sp3d.

What is the bond angle of SeF4?

169.2°
Selenium in SeF4 has an oxidation state of +4. Its shape in the gaseous phase is similar to that of SF4, having a see-saw shape. VSEPR theory predicts a pseudo-trigonal pyramidal disposition of the five electron pairs around the selenium atom. The axial Se-F bonds are 177 pm with an F-Se-F bond angle of 169.2°.

What is the hybridization of the S atom in SF4?

sp3d type