Podcast
Questions and Answers
Why was the picture of atoms called the planetary model?
Why was the picture of atoms called the planetary model?
- Because it suggested that electrons have a fixed position within the nucleus.
- Because it depicted the electron as orbiting the nucleus like planets orbiting the sun. (correct)
- Because it showed the electrons moving randomly around the nucleus.
- Because it demonstrated the movement of electrons in a straight line.
What is the simplest atom according to the text?
What is the simplest atom according to the text?
- Hydrogen (correct)
- Oxygen
- Nitrogen
- Carbon
Why did Niels Bohr ignore classical electromagnetism's prediction regarding the orbiting electron in hydrogen?
Why did Niels Bohr ignore classical electromagnetism's prediction regarding the orbiting electron in hydrogen?
- To prevent the electron from spiraling into the nucleus. (correct)
- To accelerate the electron's movement.
- To increase the size of the electron's orbit.
- To increase the stability of atoms.
What would happen if an electron were to move in an elliptical orbit according to classical electromagnetism?
What would happen if an electron were to move in an elliptical orbit according to classical electromagnetism?
How did Niels Bohr incorporate Planck's ideas and Einstein's finding into the classical mechanics description of the atom?
How did Niels Bohr incorporate Planck's ideas and Einstein's finding into the classical mechanics description of the atom?
Why is the classical mechanics description of the atom, as mentioned in the text, considered incomplete?
Why is the classical mechanics description of the atom, as mentioned in the text, considered incomplete?
According to Bohr's model, when is a photon emitted or absorbed by an electron?
According to Bohr's model, when is a photon emitted or absorbed by an electron?
What does the expression En = -k*n^2 represent in Bohr's model of the atom?
What does the expression En = -k*n^2 represent in Bohr's model of the atom?
What happens to an atom when its electron moves to a higher energy orbit?
What happens to an atom when its electron moves to a higher energy orbit?
How does the energy expression differ for hydrogen-like atoms compared to hydrogen atoms?
How does the energy expression differ for hydrogen-like atoms compared to hydrogen atoms?
What is implied by the equation r = n^2Za0 for the circular orbits of hydrogen-like atoms?
What is implied by the equation r = n^2Za0 for the circular orbits of hydrogen-like atoms?
Why did Bohr's model get taken seriously despite its many assumptions?
Why did Bohr's model get taken seriously despite its many assumptions?
What does the ionization limit represent when n ⟶ ∞ and r ⟶ ∞?
What does the ionization limit represent when n ⟶ ∞ and r ⟶ ∞?
Why was Bohr's model of the hydrogen atom considered flawed?
Why was Bohr's model of the hydrogen atom considered flawed?
What does the energy difference between two states indicate during an electron transition?
What does the energy difference between two states indicate during an electron transition?
In Bohr's model, what is used to describe the quantized energies of electrons in an atom?
In Bohr's model, what is used to describe the quantized energies of electrons in an atom?
What does the calculated energy of an electron in a hydrogen atom at n = 3 represent?
What does the calculated energy of an electron in a hydrogen atom at n = 3 represent?
What happened when Bohr tried to extend his theory to the next simplest atom, helium (He)?
What happened when Bohr tried to extend his theory to the next simplest atom, helium (He)?
What does the wavelength of a photon during an electron transition indicate?
What does the wavelength of a photon during an electron transition indicate?
How did physicists at the time perceive classical theories after resolving paradoxes involving Planck's constant?
How did physicists at the time perceive classical theories after resolving paradoxes involving Planck's constant?
What is the significance of the ionization limit when n tends to infinity and the orbit radius tends to infinity?
What is the significance of the ionization limit when n tends to infinity and the orbit radius tends to infinity?
Why was Bohr's model considered flawed according to the text?
Why was Bohr's model considered flawed according to the text?
In Bohr's model, what does a negative energy value for an electron indicate?
In Bohr's model, what does a negative energy value for an electron indicate?
What was the major limitation of Bohr's model in extending it to atoms with more than one electron?
What was the major limitation of Bohr's model in extending it to atoms with more than one electron?
How did early researchers calculate the energy of an electron at a specific distance from the nucleus in a hydrogen atom?
How did early researchers calculate the energy of an electron at a specific distance from the nucleus in a hydrogen atom?
What does a positive energy difference between two states indicate during an electron transition?
What does a positive energy difference between two states indicate during an electron transition?
Why did classical mechanics concepts fail to extend into the microscopic domain according to most physicists at that time?
Why did classical mechanics concepts fail to extend into the microscopic domain according to most physicists at that time?
What is the calculated energy, in joules, of an electron in a hydrogen atom when it is promoted to an orbit with n = 3?
What is the calculated energy, in joules, of an electron in a hydrogen atom when it is promoted to an orbit with n = 3?
What is the energy, in joules, and the wavelength, in meters, of the photon produced when an electron falls from the n = 4 to the n = 6 level in a hydrogen atom?
What is the energy, in joules, and the wavelength, in meters, of the photon produced when an electron falls from the n = 4 to the n = 6 level in a hydrogen atom?
What is the energy, in joules, and the wavelength, in meters, of the photon produced when an electron falls from the n = 5 to the n = 3 level in a He+ ion (Z = 2 for He+)?
What is the energy, in joules, and the wavelength, in meters, of the photon produced when an electron falls from the n = 5 to the n = 3 level in a He+ ion (Z = 2 for He+)?
Why was Bohr unable to extend his model to the next simplest atom, helium (He), which only has two electrons?
Why was Bohr unable to extend his model to the next simplest atom, helium (He), which only has two electrons?
What does the ionization limit represent when n tends to infinity and the orbit radius tends to infinity?
What does the ionization limit represent when n tends to infinity and the orbit radius tends to infinity?
