Which of the following statements is true regarding bohr...

"Which of the following statements is true regarding Bohr model of hydrogen atom? (I)? Orbiting speed of electrons decreases as it falls to discrete orbits away from the nucleus. (II)? Radii of allowed orbits of electrons are proportional to the principal quantum number. (III)? Frequency with which electrons orbit around the nucleus in discrete orbits is inversely proportional to the principal quantum number. (IV)? Binding force with which the electron is bound to the nucleus increases as it shifts to outer orbits."

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00:01 Hello friends, we are here to solve a problem in which the problem says which of the following statements is true regarding boers model of hydrogen atom.

00:09 We have definitely read about boers model a lot and it is quite a famous model of hydrogen atom as well.

00:17 So let us see the statements in order to prove their validation.

00:21 So if i say that orbital orbiting speed of electrons decreases as it falls to discrete orbits away from the next.

00:30 Nucleus.

00:31 So, first statement was that, let me just read out all the statements.

00:35 Second statement says that radii of allowed orbits of electrons are proportional to the principal quantum number.

00:41 Third one says that frequency with which electrons orbit around the nucleus in discrete orbits is inversely proportional to the principal quantum number.

00:52 Fourth says, binding force with which the electron is bound to the nucleus increases as it shift to outer orbits.

01:00 Okay, so if you have read or understood the four statements, let me just try to discuss one by one all the statements.

01:08 So, i can say that in case of bors model of hydrogen atom, orbital speed varies inversely as the radius of the orbit.

01:17 I can write that orbital speed varies inversely with the radius of the orbit.

01:22 And energy increases with increase in quantum number...

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