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Molecular shape

Posted: Sun Jul 28, 2019 12:13 am
by Karolina herrera1F
When we write the molecular shape of the element how do we know when to add the solid shaded in triangle and the sgiwgal to ? and the regular bonding lines to?

Re: Molecular shape

Posted: Sun Jul 28, 2019 10:19 am
by Chem_Mod
If you are referring to the dark solid wedge which shows in 3D the bond is coming towards you, and the dashed wedge showing the bond is going further from you, then do not worry about drawing any 3D structures as it is unnecessary.

If we examine a trigonal bipyramidal structure from a birds eye view, the 3 equatorial bonds will be regular, the axial bond closest to you would be a solid wedge, and the axial bond furthest would be a dashed wedge showing that it is deeper than the 3 equatorial bonds.

Re: Molecular shape

Posted: Sun Jul 28, 2019 7:59 pm
by nicknavejas1B
Great question, I was curious about this as well

Re: Molecular shape

Posted: Sun Jul 28, 2019 10:06 pm
by Sisi Li 1F
The shaded in triangle simply means that the electron is pointing towards you, while the dashed triangle means it's angled away. For the final, I wouldn't worry about having to know about this.