It takes up space like an "invisible" atom.
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NH2- is sp3 hybridized and there is 2 bonding and 2 lone pair of electron,that's why shape of NH2 is angular.
Trigonal planar because it has three bonding pairs and one lone pair
its a trigonal pyramid but it can also be tetrahedral because it has a lone pair of electron bonded to the centrel atom (P)
Trigonal pyramidal. As has 5 valence electrons. It forms single bonds with each of the F atoms, donating one electron to each bond. This leaves 2 unbonded electrons, or a single lone pair. Thus the molecule has 4 different groups attached to As, and the electron configuration is tetrahedral. A tetrahedral configuration with one lone pair results in a trigonal pyramidal molecular geometry.
The molecular geometry of XeO2Cl2 is square planar. This is because the central xenon atom is surrounded by two oxygen atoms and two chlorine atoms, resulting in a symmetrical arrangement with a bond angle of 90 degrees. The lone pairs on the xenon atom are located in the axial positions, giving it a square planar geometry.