Question: 100% NCERT covered from Particular Keyword.Explanations are 100% from NCERT | [Difficult level: Easy] From NCERT NEET Derived Question.
Which of the following statements are true regarding Bohr’s
model of hydrogen atom?
I. Orbiting speed of electron decreases as it shifts to
discrete orbits away from the nucleus
II. Radii of allowed orbits of electron are proportional to
the principal quantum number
III. Frequency with which electrons orbit around the
nucleus in discrete orbits is inversely proportional to
the cube of principal quantum number
IV. Binding force with which the electron is bound to the
nucleus increases as it shifts to outer orbits
(a) I and II (b) II and IV
(c) I, II and III (d) II, III and IV
Answer:
(a) Orbital speed varies inversely as the radius of the orbit.
