Hello friends! We all know cryptex box right? Here in this video we are going to solve a puzzle to open the cryptex box. Are you excited? And you might have a curiosity, what sort of questions will be there in that puzzle? To solve that we need to understand some concepts of modern atomic theory. At the end of this video, we will understand the concepts of modern atomic theory and will get clue to solve the puzzle. Are you ready? shall we play?