Questions: SF₆ has a geometric structure.
- tetrahedral
- octahedral
- trigonal planar
- linear
Transcript text: $\mathrm{SF}_{6}$ has a $\qquad$ geometric structure.
tetrahedral
octahedral
trigonal planar
linear
Solution
Solution Steps
Step 1: Identify the molecular geometry of $\mathrm{SF}_{6}$
To determine the geometric structure of $\mathrm{SF}_{6}$, we need to consider the number of bonding pairs and lone pairs around the central atom (sulfur, S).
Step 2: Determine the number of bonding pairs and lone pairs
Sulfur hexafluoride ($\mathrm{SF}_{6}$) consists of one sulfur atom bonded to six fluorine atoms. Sulfur has 6 valence electrons, and each fluorine atom has 7 valence electrons. In $\mathrm{SF}_{6}$, all six valence electrons of sulfur are used to form six single bonds with fluorine atoms, resulting in no lone pairs on the sulfur atom.
Step 3: Determine the molecular geometry based on bonding pairs
With six bonding pairs and no lone pairs, the electron pair geometry around the sulfur atom is octahedral. This arrangement minimizes electron pair repulsion according to the VSEPR (Valence Shell Electron Pair Repulsion) theory.
Final Answer
The geometric structure of $\mathrm{SF}_{6}$ is \(\boxed{\text{octahedral}}\).