Problem: This figure shows ball-and-stick drawings of three possible shapes of an AF3 molecule. For each shape, how many nonbonding electron domains are there on atom A?

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We’re being asked to how many nonbonding electron domains are there on atom A?


The possible electron pair and molecular geometries are:




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i) Trigonal planar ii) Trigonal pyramidal iii) T-shaped


This figure shows ball-and-stick drawings of three possible shapes of an AF3 molecule. 

For each shape, how many nonbonding electron domains are there on atom A?

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