Problem: How many valance electrons are in an atom of phosphorus?

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We have to determine how many valence electrons are there in an atom of phosphorous.

Phosphorous is a main-group element and belongs to group 5A of the periodic table.

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Problem Details

How many valance electrons are in an atom of phosphorus?

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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 Configuration concept. You can view video lessons to learn Electron Configuration. Or if you need more Electron Configuration practice, you can also practice Electron Configuration practice problems.