42 Multiple choice questions
effect that occurs when a block of graphite is placed in the path of a
narrow beam of xrays, and the x-rays scatter in such a way that, at any
angle of scattering, they are most intense at two wavelengths: the
incident wavelength and a longer wavelength that increases as the
scaterring angle increases
___ quantum number (denoted ms) differentiates the two electrons in the
same orientation within the same orbital within the same energy level.
- term signifying that all the electrons within any atom are restricted to specific energy states
for the specific frequencies of radiation emitted by elements or
compounds in gaseous form, which increase in intensity as a function of
- Max Planck's theory that radiation is emitted in discrete amounts when an electrically charged body oscillates
- term for the higher energy state of an electron
- term for a certain potential at which the current in a collector ceases
- Schrodinger's model which related an electron's energy state to a cyclical standing wave
- term for the production of visible light by a heated body
- The ____ quantum number (denoted m1) indicates the spatial orientation of an orbital.
____ quantum number (denoted n) indicates a specific energy level
containing electrons at an average radius from the nucelus.
- term for the relationship betweent the radiated energy and the temperature of a blackbody
- term for an ideal absorber, which absorbs all the radiation that falls upon it
- Bohr stated that the energy of a hydrogen atom's electron does not ___ ____.
- term for the electrons ejected from a surface exposed to ultraviolet light or other radiation
proposed that light emited by the hydrogen electron during transition
to a lower energy state takes the form a of a single photon with a
frequency of ___ ___ or of ___ elsewhere on the spectrum.
- the law that states that the most strongly emitted wavelength is a function of temperature
- term for the lowest possible energy state of an electron
- According to the wave equation, ψ gives the value of the ___ ___ under a given set of conditions.
- term for the particles of which light consists
- the Danish physicist who constructed a model of a hydrogen atom in order to predict the behavior of its electron
for the amount of work that must be done to remove an electron from the
outermost orbit of an outlying atom to a distance infinitely far away
- Bohr postulated that light is emitted by the hydrogen electron only when it moves from a ___ energy state to a ___ one.
for the frequency above which photoemission occurs even if the light is
extremely weak, and below which photemission never occurs
- term for the ejection of electrons from a surface exposed to ultraviolet light or any other radiation
equation which states that the wavelength of any material particle or
body is equal to Planck's constant divided by the product of mass and
four numbers that provide a statistical description of an electron's
likelihood to be found in a given region where they will demonstrate
- Bohr claimed that the jumps of the hydrogen electron are esentially ____.
- Heisenberg's principle which states that we know either an electron's position or momentum, but not both at the same time
concept that every quantum system exhibits both particle and wave
properties, but the demonstration of one property limits the
demonstration of the other at the same moment
- The ____ (denoted by l) indicates the possible orbitals within a given energy level.
- the principle which states that no two electrons within an atom can have the same set of quantum numbers
for the spectrum whose prominent lines are identical in location to the
two prominent lines in the line emission spectrum of the same element
- term for the hollow, three-dimensional shape that shows positions of high probability for finding an electron around a nucleus
- term for a theoretical picture of something
- the discrete amounts in which radiation is emitted, according to Planck
- term for a certain positive potential beyond which the current rises very little
- term for the luminal energy emitted per unit time from a unit area
- the theory that matter exists simultaneously as both waves and particles, the particles moving in a manner dictated by the waves
- A gas emits the same ____ that is absorbs.
- When a property like wavelength is a factor, matter may be viewed as ___ ___.
- term for the space beween two shells-- a place of low probablility for containing an electron