Well we're gonna say we have three electron groups and it starts with tri tri meaning three. Just make sure you're spelling it correctly and how to remember this. Now the beauty of chemistry is that we can pronounce things differently, but all that really matters is that you get the spelling correct? Okay, so you might hear trickle planner, Trigano Planner, Tribunal planner Trigano Planner. The electron geometry name would be tribunal plainer. Remember we're treating lone pairs and surrounding elements as the same in this case. And remember these electronic groups could either be three surrounding elements Or there could be two surrounding elements and one lone pair. So again, we have carbon in the center and we have two electron groups. Okay, so line for linear and two points because there's two electron groups. Is that recall that there are two points in a straight line. The geometry here the electron geometry would be called linear. So that's why it has two electron groups. Here we have carbon dioxide as as an example, carbon is a central element. And let's say that our molecule has two electron groups. So here we're gonna start out with the first one. So if we take a look here at this chart, we're breaking things down in terms of number of electron groups, the orbital shapes where we just give certain examples that fit this particular row, the electron geometry name and then a memory told to help us to remember that electron geometry name. And when it comes to the electron geometry, we're gonna treat lone pairs and surrounding elements as the same. So when we say electron geometry realize that it represents the simplest system for geometrical shapes that focuses on the number of electron groups around the central element.
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