5.6 Bohr's Atomic Model
Which of the following is/are explained by Bohr's model?
(a), (b) and (d) are correct
When did Bohr propose his model of the atom?
1913
What happens when an electron in a hydrogen atom moves from the excited state to the ground state?
A photon is emitted.
According to the Bohr model of an atom:
Both A and C
Bohr used a mixture of _____ to study electronic spectrums.
Classical and quantum physics
Bohr was able to explain the spectra of the:
H atom
Can the electron occupy any space between the orbits?
No
Bohr's atomic model is also commonly called the _____ model.
planetary
According to Bohr, electrons move in an orbital.
FALSE
According to Bohr, electrons circling the nucleus do not emit energy and spiral into the nucleus
TRUE
Where, relative to the nucleus, is the ground state of a hydrogen atom?
closest to the nucleus
Energy is transmitted only in indivisible, discrete quantities called
quanta
Bohr proposed electrons orbit at fixed distances from the nucleus in _____ states, such as the ground state or excited state.
stationary
Bohr considered electrons as _____.
Discrete particles
Which of the following is true according to the Bohr model of the atom?
Electrons orbit the nucleus in definite orbits.
According to Bohr's model of the atom, orbits closer to the nucleus would require the electrons to have a greater amount of energy, and orbits farther from the nucleus would require the electrons to have a smaller amount of energy.
FALSE
Bohr's model was a complete failure and could not provide insights for further development in atomic theory.
FALSE
Bohr's model was successful for atoms which have multiple electrons.
FALSE
Electrons present in the orbits closer to the nucleus have larger amounts of energy.
FALSE
What was the difficulty with Bohr's model of the atom?
It only explained the atomic emission spectrum of hydrogen.
A model of the atom which explained the atomic emission spectrum of hydrogen was proposed by _____.
Neils Bohr
According to Bohr, electrons circling the nucleus do not emit energy and spiral into the nucleus.
TRUE
According to the Bohr model of atoms, electrons occupy definite orbits.
TRUE
Bohr's theory explained the line spectra of the hydrogen atom.
TRUE
Electrons cannot exist at the spaces in between the Bohr orbits.
TRUE
Niels Bohr proposed that electrons circled the nucleus of an atom in a planetary-like motion.
TRUE
The key idea in the Bohr model of the atom is that electrons occupy definite orbits which require the electron to have a specific amount of energy.
TRUE
Which statement best describes the orbits of the electrons according to the Bohr model?
The orbits are at fixed distances from the nucleus.
Bohr suggested that an atomic spectrum is created when the _____ in an atom move between energy levels.
electrons
In Bohr's model, electrons exist in orbits around the nucleus which only exist at fixed distances from the nucleus called ____ levels.
energy
In the Bohr model of the atom, what is the term for fixed distances from the nucleus of an atom where electrons may be found?
energy levels
A ______ state is when the electron is closest to the nucleus.
ground
The discrete amounts of energy that can be absorbed or released by an atom as an electron changes energy levels are called _____.
quanta