2017年11月11日 · Ex) BH3 Trigonal bipyramidal has a VSEPR formula of AX5E0, meaning that the molecule has 5 bonded pairs and 0 lone pairs on the central atom, making the bond angles 90 degrees and 120 degrees. Ex) PCl5 Therefore, essentially the only difference is number of bonds the the central atom makes.

2023年11月22日 · Re: BH3 Post by 605909366 » Wed Nov 22, 2023 7:55 am In BH₃ (boron trihydride), the trigonal planar geometry is linked to the hybridization of boron's atomic orbitals.

2023年11月21日 · Yes, you are correct. Trigonal pyramidal will have a lone pair, causing a pyramid-like shape. For example, NH3 would have a trigonal pyramidal shape due to N's lone pair, whereas BH3 would have a trigonal planar shape due to no lone pairs.

2023年11月22日 · For example, a trigonal planar formation (like Boron Hydride BH3) would have 120 degree bond angles while a liner structure like CO2 would be 180 degrees. Speaking from experience, being able to quickly identify bond angles from these structures did take a little bit of time for me to understand (especially with structures involving those ...

2021年12月3日 · When drawing the lewis structures of NH3 and BH3, it's apparent that there is a lone pair of electrons on the central atom N for NH3. This lone pair of electrons can be donated, thus classifying it as a lewis base.

2021年11月12日 · For example, in BH3, the molecule boron only had three valence electrons, and each hydrogen atom has one valence electron, so the entire molecule only needs 6 electrons to be stable. Essentially, it all depends on the total number of valence electrons in a molecule, and if it includes one of the elements I mentioned earlier, it may not need to ...

2023年11月16日 · The VSEPR theory help determine the 3D shapes of molecules. You can determine this from the chemical formula by taking account how many bonds there are and the amount of lone pairs. For ClO4-, since chlorine would bond with four oxygen bonds, the shape is a tetrahedral with a bond angle of 109.5 degrees.

2020年11月23日 · Re: Ways to remember VSEPR Post by Anna_Mohling_1D » Tue Nov 24, 2020 9:48 pm I usually just think of it as a word rather than the 5 letters so I say it like Vespr which is in the wrong order for the acronym so I make sure to remain cognitive of that!

2020年11月25日 · re: h2o vsepr Post by Andy Hernandez » Mon Nov 30, 2020 7:45 am Although there are 4 bonding regions for H20, there are still 2 lone pairs, makes the shape of molecule bent since the two lone pairs are pushing the electrons from the two bonded atoms

2019年11月13日 · Re: Sulfur Hexafluoride VSEPR Post by KBELTRAMI_1E » Thu Nov 14, 2019 1:46 am Kate Osborne 1B wrote: Octahedral shape describes a compound with 6 shared pairs of electrons and since there are 6 bonds in SF6 it is octahedral.