The number of electrons that may be in the 2nd principle energy level.
What is 8?
100
The form of energy that is emitted by the sun.
What is electromagnetic radiation?
100
The rockstar who gets credit for having created the first Periodic Table, who predicted properties of elements that were as of yet unknown.
Who is Mendeleev?
100
In the Bohr model, this is where electrons may be found.
What is an energy level or orbits?
100
The relationship between frequency and wavelength.
What is an inverse relationship?
200
To occupy the same orbital, the two electrons must....
What is have opposite spins?
200
How light behaves.
What is as a wave and a particle?
200
These are the trends (periodic and group) for atomic radius.
What is increase as you move down a group and decreases as you move from left to right across a period?
200
This is the amount of energy needed for an electron to move from one energy level to another.
What is a quantum?
200
This is the wavelength of the yellow light emitted from a sodium lamp if the frequency of the radiation is 5.10 e14 Hz.
What is 5.88 e-5 cm (5.9 e-5 cm if your c has 2 S.F.)?
300
This element has the electron configuration
1s2 2s2 2p6 3s2 3p6 4s2 3d6
What is iron?
300
The form(s) of EMR emitted by the sun.
What is ultraviolet, visible, and infrared?
300
The reasons for the group trend in atomic radius
What are additional energy levels and increased shielding from the nucleus?
300
This model of the atom is based on mathematics.
What is Schrödinger's model (aka the quantum mechanical model...aka the current atomic model)?
300
This is the frequency of EMR with a wavelength of 451 nm.
What is 6.65 e14 Hz (6.7 e14 Hz if your c has 2 S.F.)?
400
This is the shorthand electron configuration of silver.
What is [Kr] 5s1 4d10?
400
As wavelength of EMR increases, this happens to the energy of the EMR.
What is decreases?
400
These are the trends (periodic and group) for ionic radius.
What is increase as you move down a group and decrease as you move from left to right across a period? (n.b. the EXCEPTION is that there is a large increase when moving from anions to cations...but then the trend continues.)
400
The region in a sublevel where an electron is most likely to be found.
What is an orbital?
400
This is the amount of energy of a photon of light emitted with a frequency of 4.99 e14 Hz.
What is 3.31 e-19 J?
500
The reason chromium's electron configuration is
[Ar] 4s1 3d5
and not
[Ar] 4s2 3d4
What is increased stability by having a half full d-sublevel?
500
The range of wavelengths of EMR in the visible region.
What is 400-700 nm?
500
The correct order for smallest to largest electronegativity for:
calcium, carbon, cesium, and chlorine.
What is cesium, calcium, carbon, and chlorine?
500
This model of the atom preceded Bohr and Schrödinger, when scientists thought the atom was a sphere of positive charge with negatively charged electrons embedded throughout.
What is the plum pudding model?
500
A photon with an energy of 3.15e-19 joules has this corresponding wavelength.