The probability cloud for the electron in the hydrogen atom has an average radius
A)quite different from the radius predicted by Bohr.
B)in agreement with the orbital radius of Bohr.
C)as yet not accurately measured.

Question

Quizplus · Accepted Answer

The average radius of the electron probability cloud in the hydrogen atom is in agreement with the orbital radius predicted by Bohr. Bohr's model of the hydrogen atom, which considers the electron to orbit the nucleus in distinct energy states, predicts that the electron in the ground state (lowest energy state) would have an orbital radius of approximately 0.53 angstroms. Quantum mechanics, which provides a more accurate description of the hydrogen atom, confirms that the average radius of the electron probability distribution is indeed close to this value. Hence, choice B is the correct answer.

The Probability Cloud for the Electron in the Hydrogen Atom