179 and 103 degrees
source and excellent explanation:
http://www.madsci.org/posts/archives/2001-02/983324692.Ch.r.html
The central atom in Sif6 2- is silicon (Si). To determine the hybridization, we count the number of regions of electron density around the silicon atom, which in this case is six. Therefore, the hybridization of Si in Sif6 2- is sp3d2.
The central atom in SIF6^2- is sulfur. The sulfur atom in SIF6^2- has an sp3d2 hybridization, which includes one s orbital, three p orbitals, and two d orbitals to form six sp3d2 hybrid orbitals around the sulfur atom.
The bond angle of AlCl3 is 120 degrees.
The bond angle of N2O is 180 degrees.
The bond angle for H2S is approximately 92 degrees.
The central atom in Sif6 2- is silicon (Si). To determine the hybridization, we count the number of regions of electron density around the silicon atom, which in this case is six. Therefore, the hybridization of Si in Sif6 2- is sp3d2.
The geometry is octrahedral.
nonpolar
The central atom in SIF6^2- is sulfur. The sulfur atom in SIF6^2- has an sp3d2 hybridization, which includes one s orbital, three p orbitals, and two d orbitals to form six sp3d2 hybrid orbitals around the sulfur atom.
The bond angle of AlCl3 is 120 degrees.
The bond angle of N2O is 180 degrees.
The bond angle in CO2 is 180 degrees.
The bond angle for H2S is approximately 92 degrees.
The bond angle for NBr3 is approximately 107 degrees.
The bond angle for AsF3 is approximately 87.5 degrees.
The bond angle for IO2 is around 120 degrees.
The bond angle in NI3 is approximately 107 degrees.