posted by Jessica .
What is the major difference between the two-dimensional and three- dimensional models of ethane and methane? When might you choose to use a two-dimensional model rather than a three-dimensional model when representing one of the molecules?
The major difference is that the two-dimensional model doesn't show the C-H angles. For example, three-dimensional models are needed to show stereo-isomerism
3D - more specific and harder to draw, 2D - much easier and provides more details.
I sort of dragged it out for you :)
I don't know