Equatorial and Axial Positions Concept 2

Jules Bruno
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lone pair positions are extremely important when trying to draw the most accurate molecule here, we're going to say that lone pairs will orient themselves in order to decrease the interactions between surrounding elements. Now here when we're drawing different structures were paying more attention to those with six electron groups and those with five electron groups were going to say here that with six electron group systems, lone pairs are most stable in the actual position. Within five electron group systems, lone pairs are most stable in the equatorial position. Now you might ask, how do I remember this? Well we have a memory toll for that and the memory tool is just remember. It's a long as long as you remember the hands of the clock. So if we take a look here at the first clock, we have the hands giving us a time of 6:00. Now let's just imagine that that circle in the middle, that dark circle represents our central element. And here this would represent our equator. We're going to say, We said when it deals with six electron groups, they are in the actual positions. So remember actual positions are straight up and straight down. So above and below the equator of our structure. And if we look they're pointing at 6:00. So we're gonna say 6:00 is for six electron groups. The hands are pointing straight up and straight down just like actual positions point straight up and straight down for five electron group systems. Again, we imagine that we have our equator here. Both the hands are not pointing straight up and straight down so they wouldn't represent actual positions. They represent equatorial positions. So here we say that five o'clock is 45 electron groups. Alright, so just remember, you can remember six o'clock straight up and straight down. Those are actual positions. And you remember lone pairs are most stable in the actual positions. If it's at five o'clock, that means both hands are not straight up and straight down so they couldn't be actual positions. They would be equatorial positions. So in those cases lone pairs or should be oriented in the equatorial positions to draw the best possible structure. So keep that in mind when we deal with five electron group systems and six electron group systems.
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