SAT II Chemistry : Molecules

Study concepts, example questions & explanations for SAT II Chemistry

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Example Questions

Example Question #2 : Sat Subject Test In Chemistry

Based on VSEPR theory and electron configurations, which of the following molecules is not matched with its correct geometry?

Possible Answers:

 - Trigonal planar

 - Bent (v-shaped)

 - Linear

 - Linear

 - Tetrahedral

Correct answer:

 - Trigonal planar

Explanation:

 has three bonding pairs and one non-bonding pair, which is the geometry for trigonal pyramidal, not trigonal planar.

Example Question #2 : Sat Subject Test In Chemistry

What is the molecular geometry of ?

Possible Answers:

Square planar 

Octahedral 

Square pyramidal

Tetrahedral 

Trigonal pyramidal 

Correct answer:

Square pyramidal

Explanation:

There are six electron domains in  has five bonding and one nonbonding pairs of electrons. The electron domain geometry of  is octahedral. When a molecule has octahedral electron domain geometry and has five bonding and one nonbonding pairs, the molecular geometry is square pyramidal.

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