VSEPR Practice 5-6 Electron Domains

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Valence Shell Electron Pair Repulsion examples for 5-6 electron domains including: Trigonal Bipyramidal, Seesaw, T-shaped, Linear, Octahedral, Square Pyramidal and Square Planar.
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Why in the AX3E2 case are the non-bonding pairs arranged in an equatorial and not axial position? In the axial position each non-bonding pair interacts with 4 other domains, three of which are at 90° and one at 180°. In equatorial position, however, it has 2 interactions at 90° but two at 120°. So I wonder why one interaction at 90 and one at 180 are not better than two at 120 also considering that with the first configuration the two non-bonding pairs would be as far apart as possible? In molecules like ClF3 a planar trigonal geometry seems more sensible to me rather than a "T" one.

ezekhielahui
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Thanks so much! I was lost in chem on this VSPER but your step by step explanation really makes it more clear🧬🧫🦠😀

jasonlove