molecules and bonding

In a molecule having three bond pairs of electrons around its central atom, the electron pairs form an equilateral triangular arrangement around the central atom. These molecules have trigonal planar (or triangularplanar) shape and the three bond pairs are a..

Six bond pairs in a molecule are distributed octahedrally around the central atom. A molecule having six bond pairs around its central atom has an octahedral shape. In a molecule of the type AB 6 , the six 'B' atoms are placed octahedrally around '..

F ormation of oxygen (O 2 ) molecule 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: ..

The pairs of electrons in the valence shell of an atom, which are not involved in bonding are called lone pair of electrons. Well known instances of these types of molecules are: the oxygen atom in water molecule H 2 O, has two lone pairs of electrons; the nitrogen at..

Hydrogen molecule - The bonding between hydrogen atoms to form a molecule of hydrogen can be represented as follows: In this representation, half-filled '1s' orbital of one hydrogen atom overlaps (shown by 'dashed' lines) with that of the other having electron with opp..

The four electron pairs (two bond pairs + two lone pairs) are distributed tetrahedrally around the central atom as shown below. The two lone pairs on the central atom repel the bond pair slightly inwards due to greater lone pair-bond pair repulsion. As a result, the h..

Bonding in Some Diatomic Molecules - Bonding in some homonuclear diatomic molecules of the elements of first and second rows of the periodic table: 1. Hydrogen molecule (H 2 ) 2. Hydrogen molecule ion (H 2 + ) 3. Hypothetical helium m..

Bonding in some homonuclear diatomic molecules of the elements of first and second rows of the periodic table: 1. Hydrogen molecule (H 2 ) 2. Hydrogen molecule ion (H 2 + ) 3. Hypothetical helium molecule (He 2..

Sometimes, two or more stable molecules combine to form a molecular complex. In a complex molecule, the constituent molecules are held together by a 'coordinate bond'. One typical example involves the molecules of NH 3 and BF 3 . The electron dot ..

In polyatomic molecules the dipole moment not only depends upon the individual dipole moments of the bonds but also on the spatial arrangement of the various bonds in the molecule. In such molecules the dipole moment of the molecule is th..