What is the molecular shape of SCl3F as predicted by the VSEPR theory?
a. linear
b. bent
c. seesaw
d. Tshaped
e. trigonal pyramidal
2 Answers

valence electrons of S = 6
electrons given by Cl3 = 3
electrons given by F = 1
total no of electrons = (6+3+1) = 10
no of electron pairs = 10/2 = 5
no of bond pairs with CL an F = (3+1) = 4
no of lone pairs = 54 = 1
therefore molecular shape is = seesaw

C. SeeSaw
U= 1/2 (BA)
B=6(N)+2 *N=#atoms not counting Hydrogen
A=all available valence e
A: add 1 for each  charge, subtract 1 for each + charge
U=O
5 Atoms = Tetrahedral i.e. CH4
4 Atoms=Trigonal Pyramidal
3 Atoms = Angular (bent)
2 Atoms=linear
U=1
4 Atoms=Trigonal Planar
3 Atoms=Angular Bent
2 Atoms=Linear
U=2
Linear
U=1
6 atoms =Trigonal Bipyramidal
5 atoms=Seesaw(i.e. SCl3F)
4 atoms=Tshaped
3 atoms=Linear
U=2
7atoms=Octahedral
6 atoms=Square Pyramidal
5 Atoms=Square Planar