co32 electron geometry molecular shape polar non polar an ion 8h2o electron geometry molecul

Step 1: Identify the central atom and count the total number of valence electrons for each molec

Co32 electron geometry molecular shape polar non polar an...

CO32- Electron Geometry ______________ Molecular Shape _______________ polar, non-polar, an ion __________ H2O Electron Geometry ______________ Molecular Shape _______________ polar, non-polar, an ion __________ HCO2- Electron Geometry ______________ Molecular Shape _______________ polar, non-polar, an ion __________ H2CCHF Electron Geometry ______________ Molecular Shape _______________ polar, an ion __________

Transcript

00:01 Alright, so we've got several different molecules you want to draw a lewis structure for, so here is the lewis structure for the carbonate ion.

00:11 It technically has two resonance structures as well, so you would need to redraw it and move the double bond to the other possible locations.

00:23 Of course add all your lone pairs, so i'll go ahead and put those in here for you.

00:30 Brackets around it because it has a charge, use double arrows between your different potentials.

00:35 Put the double bond down here as well, put that one in brackets too.

00:45 So that's the drawn out lewis structure for it.

00:48 You're trying to say electron geometry, so that is three bonding pairs and zero lone pairs around the central atom, the double bond only counts as one, so that's called trigonal planar.

01:05 The shape is also going to be trigonal planar because there are no lone pairs on the carbon.

01:11 And then polar, nonpolar, or an ion, this is going to be a nonpolar molecule.

01:20 It's nonpolar because even though there's dipoles that point from the c towards the o's, they're all equal and opposite in direction so they cancel each other out.

01:30 Next lewis structure is water, very common one you've probably seen before.

01:38 When you look at the central atom you've got the two bonding pairs and the two lone pairs, so the electron geometry is going to be called tetrahedral for that arrangement, but the shape is going to be called bent.

01:56 And polar, nonpolar, or an ion, this is a polar molecule.

02:00 The lone pairs in the central atom mess up its symmetry so it is polar.

02:07 Next one we're considering is hco2-, which is going to look something like this, with the minus charge being on that o right there.

02:23 So looking at that central atom again, you've got three bonding pairs and zero lone pairs, so just like we said for the carbonate ion, your electron pair arrangement is trigonal planar and your shape is going to be trigonal planar...

Question

CO32- Electron Geometry ______ Molecular Shape _ polar, non-polar, an ion H2O Electron Geometry __ Molecular Shape _ polar, non-polar, an ion HCO2- Electron Geometry __ Molecular Shape _ polar, non-polar, an ion H2CCHF Electron Geometry __ Molecular Shape _ polar, an ion ____

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