What are the different ways bonds can be represented?

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Discussion Overview

The discussion centers on the various ways bonds can be represented in molecular structures, particularly focusing on pictorial representations that convey three-dimensionality. Participants explore the implications of these representations for understanding molecular geometry and types of bonds.

Discussion Character

  • Exploratory
  • Technical explanation
  • Conceptual clarification

Main Points Raised

  • Some participants note that the pictorial representations, such as triangles and wedges, indicate the three-dimensional arrangement of atoms in a molecule.
  • One participant explains that a full wedge represents an atom coming out of the plane, while a dotted wedge indicates an atom positioned behind the plane.
  • There is mention of specific molecular structures, such as SF4 being tetrahedral, although a later reply questions the accuracy of this representation.
  • Some participants suggest that these representations are necessary for understanding molecular geometry, especially at advanced educational levels like 'A' level.
  • One participant expresses their lack of familiarity with 'A' level concepts, indicating a range of knowledge among participants.

Areas of Agreement / Disagreement

Participants generally agree on the utility of pictorial representations for conveying three-dimensional structures, but there is disagreement regarding the specific structure of SF4 and whether it accurately reflects the tetrahedral geometry mentioned.

Contextual Notes

There are unresolved questions about the accuracy of the molecular structure representations and the educational context in which these concepts are taught. Some assumptions about prior knowledge and definitions of bond types may not be explicitly stated.

Who May Find This Useful

This discussion may be useful for students learning about molecular geometry, educators teaching chemistry concepts, and anyone interested in the representation of chemical structures.

sarvesh0303
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These 'triangles' are the way of representing a 3-D structure.

A full wedge represents an atom that is coming out of the plane (or closer towards you) while a dotted wedge represents an atom that is behind the plane (or further away from you).

By representing like this, we can see a 3-D structure formed. In the case of SF4, the structure is tetrahedral (pyramid like).

I guess you haven't been taught of this but this is how we have to represent molecules in 'A' level.
 
You can compare that with this:
150px-Silicon-tetrachloride-3D-vdW.png

The center is Si and the four greens are fluorine.
 
Thanks a lot!
@Nguyen Quang: You're right.I'm 15, so I don't know the A level stuff yet
 
Nguyen Quang said:
...

By representing like this, we can see a 3-D structure formed. In the case of SF4, the structure is tetrahedral (pyramid like).

I guess you haven't been taught of this but this is how we have to represent molecules in 'A' level.

Just be careful, SF4 does not have this structure, but SiF4 does...
 

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