Hi Guys I hope you all doing great. I'm seeking for the answers to two questions. I really would appreciate the help: 1- for the 2 s state of hydrogen, explicitly calculate the probability P(r) dr of finding the electron between 5.2a and 5.4a? where (a) is Bohr radius. 2- what is the probablity that the electron in the n=1,l=0 state is at distant greater than 1a? where (a) is Bohr radius.