Hydrogen atoms, each having one electron in its K shell, share their electrons to form a molecule of hydrogen (H2). This allows each hydrogen atom to attain the electronic configuration of the nearest noble gas, helium.

Sharing electrons allows atoms to attain the noble gas configuration in their outermost shells, making the molecules more stable.

Carbon overcomes the problem by sharing its valence electrons with other atoms of carbon or with atoms of other elements, leading to the formation of molecules.

The relatively weak forces of attraction between molecules in carbon compounds suggest that the bonding in these compounds is not as strong as in ionic compounds.

Unlike ionic compounds, carbon compounds do not form ions. The bonding in carbon compounds does not give rise to ions.