Which of the following are called as inert gases? The electronic configuration in the outer most shell of the noble gases is? How many electrons are present in the valence shell of noble gases other than Helium? Which one of the following is correct about Noble gases? An octet is a set of? When did G.N Lewis used an octat rule? The tendency of atoms to acquire eight electron configuration in their valence shell, when bonding is known as? Who believed first that everything was made up of elements? In which century, John Dalton proposed his atomic theory? John Dalton theory brought a great progress in the subject of? Empedocles was a ___ philosopher? Who thought elements the building blocks of all materials? The term element was coined by?