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WorksheetsElectrons in Atoms
Total questions: 37
Worksheet time: 1hrs 2mins
The ways in which electrons are arranged around the nuclei of atoms.
electron configurations
quantum
photons
energy level
The ejection of electrons by metals when light shines on them.
Aufbau principle
quantum mechanical model
photoelectric effect
atomic orbitals
The region around the nucleus of an atom where an electron is likely to be moving.
quantum
atomic orbitals
photons
energy level
An atomic orbital may describe at most two electrons.
Pauli exclusion principle
Aufbau principle
Hund’s rule
electron configurations
The regions within which electrons have the highest probability of being found.
Aufbau principle
electron configurations
atomic orbitals
photons
When electrons occupy orbitals of equal energy, one electron enters each orbital until all the orbitals contain one electron.
quantum mechanical model
Pauli exclusion principle
Aufbau principle
Hund’s rule
The amount of energy required to move an electron from its present energy level to the next higher one.
quantum
photon
energy level
atomic orbital
Light quanta.
quantum mechanical model
photoelectric effect
energy level
photons
Electrons enter orbitals of lowest energy first.
quantum mechanical model
Hund’s rule
Aufbau principle
Pauli exclusion principle
The modern description of the electrons in atoms.
quantum mechanical model
Aufbau principle
Pauli exclusion principle
electron configurations
What is the total number of orbitals in the third principal energy level?
1
4
9
16
What is the maximum number of electrons allowed in the third energy level?
2
8
18
32
What is the maximum number of electrons that can occupy one orbital?
1
2
8
18
The electron configuration for fluorine is:
1s22s22p3
1s22s22p5
1s22s22p6
1s22s22p63s2
The first three electrons that enter into p orbitals must have:
parallel spins
opposite spins
low energy levels
opposite charges
The atom whose electron configuration is 1s22s22p63s23p1 is:
B
Na
Al
Ga
The configuration for the outermost energy level in Ca is:
3s2
4s2
2s1
4s1
The frequency and wavelength of all waves are ...
directly related
inversely related
unrelated
equal
The SI unit of cycles per second is called a:
photon
quantum
hertz
hund
The wavelength of light with a frequency of 2.50 × 1013 s-1 is:
1.20 × 105 m
8.33 × 105 m
1.20 × 10-5 m
8.33 × 10-5 m
Once the electron in a hydrogen atom absorbs a quantum of energy, it:
is now in its ground state
is now in its excited state
has released a photon
none of these
What is the frequency of radiation whose wavelength is 6.25 x 10-5 cm?
4.8 x 1014 s-1
4.9 x 1014 s-1
4.8 x 1019 s-1
1.8 x 1014 s-1
What is the energy of a photon whose frequency is 5.2 x 1015 s-1? h = 6.6262 x 10-34 Js
3.4 x 1018 J
3.4 x 10-18 J
8.4 x 10-18 J
1.8 x 10-18 J
The lowest energy level within which an electron can be found.
amplitude
frequency
wavelength
ground state
The height of an electromagnetic wave from the origin to the crest.
wavelength
ground state
amplitude
frequency
It is impossible to know exactly both the velocity and the position of a particle at the same time.
de Broglie’s equation
wavelength
Heisenberg uncertainty principle
frequency
The number of electromagnetic wave cycles to pass a given point per unit of time.
frequency
amplitude
wavelength
ground state
All matter exhibits wavelike motion.
Heisenberg uncertainty principle
de Broglie’s equation
amplitude
frequency
The distance between the crests of an electromagnetic wave.
frequency
amplitude
wavelength
ground state
The energy levels in an atom can be viewed like the rungs on a ladder.
Always True
Sometimes True
Never True
The electrons in an atom are arranged in concentric orbits around the nucleus.
Always True
Sometimes True
Never True
The principal quantum number equals the number of sublevels within that principal energy level.
Always True
Sometimes True
Never True
As many as eight electrons may occupy the same orbital.
Always True
Sometimes True
Never True
In all natural phenomena, change proceeds toward the lowest possible energy state.
Always True
Sometimes True
Never True
The photoelectric effect will occur only if the frequency of light striking an electron in a metal is above a certain threshold frequency.
Always True
Sometimes True
Never True
The behavior of light can be explained in terms of waves.
Always True
Sometimes True
Never True
Quantum mechanics describes the motions of subatomic particles and atoms as waves that gain or lose energy in packages called quanta.
Always True
Sometimes True
Never True
