The geometry of the molecule actually determines number of electron pairs on the central atom. The electron pairs will be arranged in such a way to minimize the repulsion and therefore, have the lowest possible energy.
trigonal bipyramidal
Br-. Bromine will grab an electron to make itself more stable, which makes it a negative ion.
This neutral (no charge) molecule has a bent linear geometry or an angular geometry, based on its Lewis structure, ::N=N=N:. (with a total of 15 valence electrons), with the dots representing electrons in non-bonding pairs, except for the one unpaired electron. It has a linear molecular geometry, because, as shown, it has only two electron domains or regions (around its central atom), which are more stably situated 180 degrees away from each other (according to the VSEPR theory). Note: The person asking this question seems to be asking for N3 with no charge on it; but I suspect s/he meant to ask for the azide ion, (N3)-, which would have 16 valence electrons, and that would also give a linear molecular structure.
It is a tetrahedral structured ion, the central nitrogen atom is sp3 hybridized.
The hybridization of the valence electrons on the nitrogen atom in NO+ is sp. The electron pair geometry is linear, and the shape of the ion is also linear.
The electron pairs in an ammonium ion are disposed along the four lines from the center of a tetrahedron to the four corners of the tetrahedron, with the nitrogen atom at the center of the tetrahedron.
The electron pair geometry for CO3^2- is trigonal planar. This is because there are three electron domains around the central carbon atom, resulting in a flat, triangular arrangement.
The electron pair geometry for SO3 is trigonal planar. This is because the sulfur atom is surrounded by three regions of electron density, leading to a molecular geometry with a symmetric, flat triangular shape.
Its actually electron pair repulsion. Its the principle that electron pairs around a central atom tend to orient themselves as far apart as possible. Electron pair repulsion is used to predict the geometry of a molecule or a polyatomic ion.
The NO2- ion has one lone electron pair.
ICl4-'s electron domain geometry is octahedral.
The chemical formula for phosphate is PO4^3-.
A Lewis acid accepts an electron pair.
Think of the sulfite ion as a molecule with its geometry and dipole moment AND a net charge. The electron pair geometry is tetrahedral and the molecular geometry is trigonal pyramidal and because of its asymmetrical shape and polar bonds, sulfite has a net dipole moment (2.04D ). The ion is polar.
The valency of phosphate is -3, as it usually forms compounds by acquiring three electrons to achieve a stable electron configuration.
No such thing as hypophosphate do u mean hypophosphite which is PO???