Step-by-step explanation:
A hydrocarbon is defined as a specie which contains atoms of carbon and hydrogen.
For example,
is a hydrocarbon.
When there are only single bonds present in a hydrocarbon then it is known as a saturated hydrocarbon.
When a hydrocarbon contains a double or triple bond then it is known as an unsaturated hydrocarbon.
For example,
is an unsaturated hydrocarbon.
Therefore, we can conclude that the statement all of the atoms of a saturated hydrocarbon are bonded by 1 or 2 pair(s) of electrons, is not true.