[aznfatass408]

Determine the uncertanity in position for te electron i a hydrogen like atom in the ground state. Explain the variation of the uncertanity with the atomic number. Iono how to start this question nor do i have any idea can somoene lead me to the right idea or how to approach this question.

and also How many radial nodes are present in the R(0 on top 3 on btottom)(R) radial eigen fucntion for the hydrogen like system. and B for the hydrogen atom, at what values of the radial cordinates will the radial nodes appear?