Which of the following frequencies corresponds to light with the longest wavelength
4.12 * 10^5 s^-1
A line in the spectrum of atomic mercury has a wavelength of 256 nm. When mercyry emits a photon of light at this wavelength, the frequency of this light is
1.17 *10^15 s^-1
Consider an atom traveling at 1% of the speed of light. The de Broglie wavelength is found to be 1.46 * 10-3 pm. Which element is this?
Which one of the following types of radiation has the shortest wavelength, the greatest energy, and the highest frequency?
The four lines observed in the visible emossion spectrum of hydrogen tell us that:
Only certain energies are allowed for the electron in a hydrogen atom
For which of the following transitions does the light emitted have the longest wavelength?
n = 4 to n = 3
In the hydrogen spectrum, what is the wavelength of light associated with the n = 4 to n = 1 electron transition?
9.73 * 10-8 m
Spacing between atoms in a crystal is on the same order as the de Broglie wavelength of accelerated electrons.
What is the wavelength of light that is emitted when an excited electron in the hydrogen atom falls from n=5 to n=3?
1.28 * 10-6 m
Which of the following is a reasonable criticism of the Bohr model of the atom?
It does not adequately predict the ionization energy of the valence electron(s) for elements other than hydrogen
In Bohr's atomic theory, when an electron moves from one erergy level to another energy level more distant from the nucleus
Energy is absorbed
Which of following statements best describes the Heisenberg uncertainty pronciple?
It is impossible to accurately know both the exact location and momentum of a particle.
Which of the following best describes an orbital?
the space in an atom where an electron is most likely to be found
Which of the following is not determined by the principle quantum number, n, of the electron in a hydrogen atom?
The size of the corresponding atomic orbital(s)
Which of the following combinations of quantum numbers (n, l, m(sub)1, m(sub)s do not represent permissible solutions of the Schrodinger equation fot the electron in the hydrogen atom (i.e.,which combination of quantum numbers is not allowed)?
Which of the following combinations of quantum numbers is not allowed?
The small, but important, energy differences between 3s,3p, and 3d orbitals are due mainly to
the penetration effect
Mendeleev is given the most credit for the concept of a periodic table of the elements because
He emphasized its usefulness in predicting the existence and properties of unknown elements
The statement that "the lowest energy configuration for an atom is the one having the maximum number of unpaired electrons allowed by the Pauli principle in a particular set of degenerate orbitals" is known as
For which of the following elements does the electron configuration for the lowest energy state show a partially fill d orbital?
Which of the following exhibits the correct orders for both atomic radius and ionization energy, respectively? (smallest to largest)
F, O, S,and S,O, F