Question

why hydrogen is not taken in metal group while hydrogen shows dual nature?

Answer 1

because it doesn't conduct thermal and electrical energy and it is an gas at the room temperature and also non malleable, non ductile which are all properties of non metals

Answer 2

hydrogen is a exception as it shows both acidic and basic natures.it also has a configuration of alkali earth metals hence with some confusion ,the position of h is declared......pls mark my answer as brainliest........hope it helps.....pls feel free to ask doubts to me.