Problem: A molecule with the formula AB3 has a trigonal pyramidal geometry.How many electron groups are on the central atom (A)?

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electron pair = # lone pair + # surrounding element


trigonal pyramidal  AX3E1


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Problem Details

A molecule with the formula AB3 has a trigonal pyramidal geometry.

How many electron groups are on the central atom (A)?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Electron Geometry concept. You can view video lessons to learn Electron Geometry. Or if you need more Electron Geometry practice, you can also practice Electron Geometry practice problems.

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