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$$$ Quiz $$$
Electrons
Who solved the photoelectric effect problem?
Einstein
$1
Can a electron be considered a wave and a particle? Who stated this?
Yes, DeBroglie
$1
What is the photelectric effect?
When light shines on a metal, and only ejects electrons at a
threshhold wavelength (or frequency)
$3
What is Hund’s rule?
Electrons fill up orbitals at same energy level one at a time, before doubling up
$2
What does the Pauli Exclusion principle state?
Only two electrons per orbital and they must have opposite
spins
$2
According to the Aufbau principle, how do electrons
enter orbitals?
In the lowest energy orbitals first (ie. 1s, then 2s, etc.)
$2
What does the Heisenberg Uncertainty principle have to say
about electrons?
You can’t know the position and velocity (speed and direction) of
an electron at the same time
$2
Which element has the electron configuration
1s22s22p63s23p64s23d104p3?
Arsenic, As
$2
Can you name a 5A anion (group 15) that has the following electron
configuration1s22s22p63s23p64s23d104p6?
Arsenide, As3-
$2
What happens when an electron goes from an excited state back
down to its ground state?
A characteristic color is emitted depending on the atom
$3
$4
Name the diatomic elements.
hydrogen - have nitrogen – no fluorine - fear oxygen - of iodine - ice
chlorine - cold bromine - beer
Who is mostly responsible for developing the quantum
mechanical model of the atom?
Erwin Schrodinger
$1
What are the letter symbols for the four orbitals?
s,p,d,f
$1
What are the maximum number of orbitals in the
s,p,d & f sublevels?
1,3,5,7
$2
What are the maximum number of electrons in the
s,p,d & f sublevels?
2,6,10,14
$2
Wavelength (l) = ?
c/ n(Do you know the units for these
three numbers?)
$1
Energy = ?
h x n(Do you know the units for these
three numbers?)
$1
What is a photon?
An elementary particle that carries a quantum of light and all other forms of electromagnetic radiation
$2
Which has a larger frequency, gamma rays or radio waves?
gamma rays
$1
Which has a larger wavelength, gamma rays or radio waves?
radio waves
$1
Which has more energy, gamma rays or radio waves?
gamma rays
$1