an oxygen molecule

Each oxygen atom shares two electrons from its valence shell. Thus, the valency of oxygen is 2..

Therefore, oxygen molecule has 16 electrons. In the formation of molecular orbitals, the electrons in the inner shells are expressed as KK denoting ( s 1s) 2 ( s *1s) 2 .The remaining 12 electrons are filled in molecular orbitals. fig 1.20 - Molecu..

Each oxygen atom has six electrons in its valence shell. Thus, it requires 2 more electrons to achieve the nearest noble gas configuration. This is achieved by sharing two pairs of electrons by the two oxygen atoms as shown below: ..

Hydrogen Molecule (H 2 ) - It is formed by the combination of two hydrogen atoms. Each hydrogen atom has one electron in 1s-orbital and, therefore, there are two electrons in hydrogen molecule. Both these electrons are to be accommodated in the lowest energy molecular ..

N 2 molecule has 14 electrons. fig 1.19 - Molecular orbital energy level diagram for N 2 moleculeThe molecular orbital electronic configuration of the molecule is: N 2 : KK( s 2s) 2 ( s *2s) ..

Fluorine Molecule (F 2 ) - The electronic configuration of fluorine atom is 1s 2 2s 2 2p 5 and therefore, there are 14 electrons in the valence shell of F 2 molecule. The molecular orbital electronic configuration of th..

A chlorine atom is extremely reactive. It cannot exist freely as it does not have a stable electronic configuration. Chlorine does not exist as single atom but as a diatomic molecule. A single covalent bond is formed between two chlorine atoms. Each chlorine atom has an electronic co..

Two hydrogen atoms mutually share one electron each with an atom of oxygen to form a water molecule (Fig. 3.8). Note ..

Hypothetical Helium Molecule (He 2 ) - Each helium atom has two electrons in 1s-orbital and therefore, there are four electrons in He 2 molecule. These electrons will be accommodated in s i 1 ls and s *1s MOs as shown below. fig 1.18 - Molecular orbital energ..