chapter 4 practice test Flashcards
a photon is emitted from a gaseous atom when an electron moves to its ground state from an
excited state
when electromagenetic radiation strikes the surface of a metal, electrons are ejected from the metal’s surface. this is a description of the
photoelectric effect
the lowest energy state of an atom is its
ground state
which of these does the angular momentum quantum number indicate
the shape of an orbital
which are the sublevels in the third energy level
s
p
d
the distance between corresponding points on adjacent waves is the wave’s
wavelength
according to Einstein which of the following can behave like a wave and also like a stream of particles
electromagnetic radiation
when an atom in an excited stat emits a photon of radiation, the energy of the photon is equal to the
difference in energy between the atom’s excited state and its final state
the total number of orbitals that can exist at a given main energy level, n, is equal to
n^2
how many possible orientations does an s orbital have
1
how many possible values are there for the spin quantum number
2
what is the total number of electrons needed to fill the fourth main energy level
32
whenever an excited hydrogen atom returns from an excited state to its ground state, it
emits a photon of radiation
when electrons change energy state, the amount of energy given off or absorbed is equal to
hv
max Planck proposed that “hot” objects radiate energy in small, specific amounts called
quanta
which of the following requires that each of the p orbitals at a particular level have one electron before any of them can have two electrons
hund’s rule
a particle that has an outer main energy level fully occupied by eight electrons has a _______ configuration
noble gas
the energy of a photon depends on the _____ or _____ of the radiation
frequency or wavelength
if electromagnetic radiation A has a lower frequency than electromagnetic radiation B, then compared with B, the wavelength of A is _____ or _____
greater or larger
the frequency of electromagnetic radiation is measured in waves per second. A frequency of one wave per second is called a ____
hertz
the distance between corresponding points on adjacent waves is called
wavelength
the ejection of electrons from the surface of a metal when light shines on it is called the
photoelectric effect
the _______ energy state of an atom is called its ground state
lowest
the number of waves that pass a point in one second is called
frequency
the numerical value of the speed of electromagnetic radiation in a vacuum is _____
3*10^8
______ is the color of the visible spectrum with the longest wavelength
red
increasing order of wavelength of the visible spectrum
violet, blue, green, yellow, orange, red
increasing frequency of the visible spectrum
red, orange, yellow, green, blue, violet
electrons that are not in the highest occupied energy level are called
inner shell electrons
any form of energy that exhibits wavelike behavior as it travels through space is called
electromagnetic radiation
an electron occupies the lowest energy orbital that can receive it
aufbau principle
all orbitals of equal energy are occupied by one electron before any single orbital is occupied by a second electron
Hund’s rule
no two electrons in the same atom can have the same four quantum numbers
pauli exclusion principle
the single electron of hydrogen circles the nucleus only in allowed orbits, each with a fixed energy
bohr model of the atom
