Difference Between

Noble Gas vs Inert Gas   Noble gases are inert gases, but all inert gases are not noble gases. Noble Gas Noble gases are the group of elements which belongs to the group 18 of the periodic table. They are nonreactive or have a very low chemical reactivity. All the chemical elements in this group are monoatomic... 

Double Bond vs Single Bond | Sigma Bond vs Double Bond   As proposed by the American chemist G.N.Lewis, atoms are stable when they contain eight electrons in their valence shell. Most of the atoms have less than eight electrons in their valence shells (except the noble gases in the group 18 of the periodic table);...