What is the molecular geometry of bh3?
An example of trigonal planar electron pair geometry and molecular geometry is BH3. This molecule is electron deficient and does not follow the octet rule because it has only 6 valence electrons. The hydrogen atoms are as far apart as possible at 120o. This is trigonal planar geometry.
The central atom is oxygen, so we do the hybridization with respect to oxygen. Oxygen contains 2 lone pairs of electrons + 2 sigma bonds with the hydrogen atoms, therefore it uses 4 hybrid orbitals. So water shows sp3 hybridization.
- of a hydrogen atom on methane. They may also contain lone pairs—this explains the geometry of water, which is sp3 hybridized due to the lone pair, which occupies one of the four hybrid orbitals. Again, the bond angle is slightly distorted due to the electron repulsion of this lone pair.
- Answer: Since C2H2 is a linear molecule the C must be sp. Also only sp carbon can form a triple bond. sp2 carbon would give a trigonal planar arrangement. The O in HOCl has two lone pairs and two bonding pairs in a tetrahedral arrangement which is sp3.
- The carbonate ion, CO3 2- is has a trigonal planer geometry meaning the carbon is sp2 hybridized.
Boron has three valence electrons so it is supposed to make 3 bonds in a molecule with hybridisation sp2 as only s and two p orbitals are used in hybridisation because last p orbital is vacant. But case of diborane is different. In diborane bonding of B atom with H and other B is different.
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Ammonia, NH3, is polar, and borane, BH3, is non-polar. Each B-H bond in BH3 is polar / forms a dipole because the B and H atoms have different electronegativities. The shape of the molecule is trigonal planar which is symmetrical, so the dipoles / bond polarities cancel. The resulting BH3 molecule is non-polar.
- The Nitrogen atom is more electronegative and therefore the valence electrons are near them more often. This makes it more negative. The Hydrogen atoms at the bottom of the structure are then more positive. Therefore, H2O is a polar molecule.
- This normally means that the molecule is non polar so that SiCl4 is a non polar molecule. The NH4+ should also be non polar but it is due the positive charge. The Cl2O molecule as the atom unequally distributed around the center atom so that this is a polar molecule.
- In CH4 the sharing is equal. Therefore CH4 is a nonpolar molecule. While there may be a difference in electronegativity between the Carbon and Hydrogen bonds, there is no net (overall) polarity. That makes CH4 a nonpolar molecule.
Updated: 2nd October 2019