Question

using the vsepr model, predict the molecular geometry of scl₄. select the single best answer. seesaw t - shaped bent trigonal planar octahedral square pyramidal tetrahedral linear trigonal pyramidal square planar

Explanation:

Step1: Determine the central atom

The central atom in $SCl_4$ is sulfur (S).

Step2: Calculate the number of valence - electron pairs

Sulfur has 6 valence electrons, and each chlorine (Cl) atom contributes 1 electron for bonding. So the total number of valence - electron pairs around the central S atom is $\frac{6 + 4\times1}{2}=5$ (using the formula $\frac{V + N}{2}$, where V is the valence electrons of the central atom and N is the number of monovalent atoms attached).

Step3: Identify the electron - pair geometry

With 5 electron - pair groups around the central atom, the electron - pair geometry is trigonal bipyramidal according to VSEPR theory.

Step4: Determine the molecular geometry

In $SCl_4$, there are 4 bonding pairs and 1 lone pair. The lone pair occupies an equatorial position to minimize repulsions. The molecular geometry with 4 bonding pairs and 1 lone pair in a trigonal - bipyramidal electron - pair geometry is seesaw.

Answer:

seesaw