Referring to Problem 1, suppose the nucleus of the hydrogen atom were enlarged to the size of a baseball (diameter = 7.3 cm). At what typical distance from the center of the baseball would you expect to find the electron?

Problem 1

The electron in a hydrogen atom is typically found at a distance of about 5.3 × 10-11 m from the nucleus, which has a diameter of about 1.0 × 10-15 m.