âSorry for the paucity of posts over the past few days but I'm in a state of upheaval known as âjob changeâ.â âThere is no scheme in all these projects to solve the paucity of clean, safe drinking water.â âThe paucity of these qualities in the present Republic would stagger them.â
Benzene is the archetypical aromatic compound. It is planar, bond angles=120Âº, all carbon atoms in the ring are sp2 hybridized, and the pi-orbitals are occupied by 6 electrons. The aromatic heterocycle pyridine is similar to benzene, and is often used as a weak base for scavenging protons.
Since the lone pair-bond repulsion is greater than the bond â bond repulsion, the bonded three atoms and the lone pair will be far apart as possible. The angle between the atoms will be less than the angle of a tetrahedron (109 o). Typically the angle in a trigonal pyramid is about 107 o.Ammonia, chlorate ion, and sulfite ion are some of the examples showing this geometry.ince the lone pair-bond repulsion is greater than the bond â bond repulsion, the bonded three atoms and the lone pair will be far apart as possible. The angle between the atoms will be less than the angle of a tetrahedron (109 o). Typically the angle in a trigonal pyramid is about 107 o.