Problem: What are the number of bonding pairs and lone pairs of electrons in  H2O?

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Figure out the Lewis structure of water to determine the # of bonding pairs and lone pairs in its structure

We’re being asked to draw a Lewis structure for H2O. We first need to determine the total number of valence electrons present in the molecule:


            Group            Valence Electrons

H         1A                   2 × 1 e = 2 e

O         6A                   1 × 6 e = 6 e

Total:  8 valence e

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Problem Details

What are the number of bonding pairs and lone pairs of electrons in  H2O?

Frequently Asked Questions

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 Lewis Dot Structure concept. You can view video lessons to learn Lewis Dot Structure. Or if you need more Lewis Dot Structure practice, you can also practice Lewis Dot Structure practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Asbury's class at PSU.