A) XeOF2 is polar, ``T''-shaped (with bond angles of approximately 90 and 180 degrees), and can be said to use xenon dsp3 hybrid orbitals for sigma-bonding.
B) SeF6 is polar, square pyramidal (with bond angles of approximately 90 and 180 degrees), and can be said to use selenium d2sp3 hybrid orbitals for sigma-bonding.
C) KrF4 is non-polar, tetrahedral (with bond angles of 109.5 degrees), and can be said to use krypton sp3 hybrid orbitals for sigma-bonding.
D) XeO4 is non-polar, tetrahedral (with bond angles of 109.5 degrees), and can be said to use xenon sp3 hybrid orbitals for sigma-bonding.
E) XeOF4 is polar, square pyramidal (with bond angles of approximately 90 and 180 degrees), and can be said to use xenon d2sp3 hybrid orbitals for sigma-bonding.