I have actually a graph with provided formulas wherein I should determine, 1: Electron dot structure, 2: Total variety of electron groups, 3: Electron Geometry, 4: link Angle, 5: number of Bonded Atoms, 6: molecule Geometry, and 7: Polar or Nonpolar.

You are watching: What is the molecular geometry of sbr2

The formula ns am currently working ~ above is SBr2, I placed S in the middle and also Br ~ above either next in a direct structure. Both Br's and S have actually 8 electrons. Once it asks the variety of electron groups, is it asking how many electron pairs space being shared? In this case 2?

I think I'm ok with drawing the electron period structure and also Polarity yet questions 2-6 ns am having trouble with. The publication shows an example but doesn't define how it obtained there. Any type of tips?


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level 1
· 6y
SBr2's shape (molecular geometry- I'm assuming) is angular/bent as result of the repulsion of the two lone pairs. The electron geometry need to be tetrahedral.

Did you usage the VSPER theory to attract the molecule first?


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level 2
Op · 6y

Ok I see the VSPER and also am now obtaining somewhere. I'm a bit puzzled though since if we room counting the variety of electron groups surrounding the main atom (ex. :O=C=O: is under central atoms v 2 electron groups which i get) yet then why is H20 Under 4 electron groups? that counts the lone pairs yet doesn't O=C=O have actually lone bag too?


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level 1
· 6y
I think you've gained it sorted but I figured I'd add this just in case.

Total variety of electron groups means the number of bonds and lone pairs around the central atom, however counting double and triple bonds as 1 "electron group".

In SBr*2* this is 4, 2 S-Br bonds and also 2 lone pairs = 4.

In BH*3* this is 3, 3 B-H bonds.

Electron geometry is the geometry of all of the electron groups roughly the main atom.

In SBr*2* there space 4 teams so it is tetrahedral.

In BH*3* there room 3 groups so it is trigonal planar.

2 = linear, 5 = trigonal bipyramidal, etc.

Bond angle come native the electron geometry, although i don't think they desire you to in reality calculate it simply estimate it based upon the geometry.

SBr*2* has a tetrahedral electron geometry and also tetrahedral bond angles are ~109.5°. However SBr*2* likewise has 2 lone bag which pushes the Br-S-Br bond edge closer together, Google will certainly tell girlfriend the exact number but

Number of bonded atoms is directly forward.

Molecular geometry is the geometry the the external inspection atoms.

SBr*2* has actually 4 electron groups, however only 2 of them room in chemistry bonds. You've more than likely seen a table of every one of the names like this. If you look under tetrahedral geometry, 2 bonding regions + 2 lone pairs you'll watch the molecule geometry is "bent".

BH*3* has actually 3 electron groups and also 3 chemistry bonds, look in ~ the very same table and also the name is the exact same as the electron geometry, trigonal planar.

Polar or no polar is interesting. You've said you know it yet I'll simply remind you if you already know that not all polar bonds bring about polar molecules.

The C-O bond is polar since there's one electronegativity difference between C and O, however CO*2* is a non polar molecule since there is no net dipole together the molecule is symmetrical. Both dipoles cancel and also the an outcome is no in its entirety dipole.

Same with the C-Cl shortcut in CCl*4*, no net dipole since the molecule is symmetrical.

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H*2*O is a polar molecule due to the fact that the 2 lone bag on oxygen typical the molecule is non symmetrical.