What is the molecular shape of SCl3F as predicted by the VSEPR theory?
a. linear
b. bent
c. see-saw
d. T-shaped
e. trigonal pyramidal
2 Answers
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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 = 5-4 = 1
therefore molecular shape is = see-saw
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C. SeeSaw
U= 1/2 (B-A)
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=T-shaped
3 atoms=Linear
U=-2
7atoms=Octahedral
6 atoms=Square Pyramidal
5 Atoms=Square Planar