Lewis Structures for Molecules with H- AND O- atoms

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Steven Garcia 1H
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Lewis Structures for Molecules with H- AND O- atoms

Postby Steven Garcia 1H » Thu Nov 29, 2018 7:52 pm

Is there a way to know whether an H will be attached to an oxygen in a molecule or attached to the central atom? I noticed in some cases the H is attached to an oxygen in the molecule and other times the H is simply attached to the central atom.

Chem_Mod
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Re: Lewis Structures for Molecules with H- AND O- atoms

Postby Chem_Mod » Thu Nov 29, 2018 10:14 pm

Usually, you can tell by the way the formula is written. For example, CBr3OH is a molecule with the H bonded to the O, and you can tell because the formula says OH. You can also draw the correct lewis structures based on minimizing formal charges.

Chloe Likwong 2K
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Re: Lewis Structures for Molecules with H- AND O- atoms

Postby Chloe Likwong 2K » Fri Nov 30, 2018 1:52 pm

If you see OH in a compound, H is usually attached to O.

Emily Ng_4C
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Re: Lewis Structures for Molecules with H- AND O- atoms

Postby Emily Ng_4C » Fri Nov 30, 2018 1:56 pm

When you see an OH in a molecular formula, the H usually goes on the O. However, to be sure, calculate the formal charges and make sure it aligns with how you are drawing the molecules.


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