SF4 has Exactly 5 Electron Pairs Around Central Atom

In summary, the molecular shape of SF4 with exactly 5 electron pairs around the central atom is trigonal bipyramidal. There are 4 bonding pairs and 1 lone pair in SF4 with exactly 5 electron pairs around the central atom. The central atom in SF4 with exactly 5 electron pairs around the central atom is sp3d hybridized. SF4 with exactly 5 electron pairs around the central atom is polar due to the lone pair pushing the bonding pairs in a trigonal pyramidal shape, creating a net dipole moment. The Lewis structure for SF4 with exactly 5 electron pairs around the central atom is Sulfur in the center with a double bond to one Fluorine, single bonds
  • #1
gsingh2011
115
1
The question is: Which species has exactly five pairs of electrons around
the central atom?
(A) ClF5 (B) SF4 (C) SF5– (D) XeF4

The answer is B. Can someone explain why? I'm not too good with these geometries that use the d-orbital.
 
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  • #2
There are no d orbitals involved. You just have to count the number of valence electrons. In the first example there are 7 electrons from Cl and 5 from Fluorine, i.e. 12 in total or six pairs. Analogously for the other cases.
 

1. What is the molecular shape of SF4 with exactly 5 electron pairs around the central atom?

The molecular shape of SF4 with exactly 5 electron pairs around the central atom is trigonal bipyramidal.

2. How many bonding pairs and lone pairs are in SF4 with exactly 5 electron pairs around the central atom?

There are 4 bonding pairs and 1 lone pair in SF4 with exactly 5 electron pairs around the central atom.

3. What is the hybridization of the central atom in SF4 with exactly 5 electron pairs around the central atom?

The central atom in SF4 with exactly 5 electron pairs around the central atom is sp3d hybridized.

4. Is SF4 with exactly 5 electron pairs around the central atom polar or nonpolar?

SF4 with exactly 5 electron pairs around the central atom is polar due to the lone pair pushing the bonding pairs in a trigonal pyramidal shape, creating a net dipole moment.

5. What is the Lewis structure for SF4 with exactly 5 electron pairs around the central atom?

The Lewis structure for SF4 with exactly 5 electron pairs around the central atom is Sulfur in the center with a double bond to one Fluorine, single bonds to the other 3 Fluorines, and a lone pair on the Sulfur atom.

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