Question

Which of the curves may represent the speed of the electron in a hydrogen atom as a function of the principal quantum number n ?

• A. I
• B. II
• C. III
• D. IV

Answer 1

Answer: (C)

III

Answer 2

(3)

v=$\frac{c}{137} \cdot \frac{Z}{n} \Rightarrow v \propto \frac{1}{n}$,graph is rectangular hyperbola