A
What is the size trend in regards to the periodic table?
Radius decreases from left to right
Which neutral element has the following electron configuration?
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p1
Ga
What are the possible values of l for an electron with n=3?
l = 0,1,2
What happens to an atoms size when it gains or loses electrons?
When electrons are added the atom increases in size, when electrons are removed size decreases
Using s, p, d, f notation, what is the electron configuration for the potassium cation, K+?
1s2 2s2 2p6 3s2 3p6
For subshell 4p give the values of the quantum numbers (n, l and ml)
n = 4
l = 1
ml = -1,0,+1
Calculate the frequency (Hz) and wavelength (nm) of the emitted photon when an electron drops from the n=4 to n=2 state.
frequency: 6.167 x 1014Hz
Wavelength:486.1 nm
Write the shorthand electron configuration for Ni
[Ar] 4s2 3d8
If n = 2, l = 0 what is the subshell designation, the allowable ml values
2s, ml = 0
The blue color of the sky results from the scattering of sunlight by air molecules. The blue light has a frequency of about 7.5 x 1014 Hz. Calculate the wavelength, in nm, associated with this radiation.
4.0 x 102 nm
Using complete subshell notation (1s22s22p6, and so forth), predict the electron configurations of Cr2+
1s22s22p63s23p64s23d2
A hypothetical wave has 6.6 J of energy. What is its hypothetical, approximate frequency?
0.9×1034 𝐻𝑧
Calculate the energy, in joules, of a single photon associated with a frequency of 7.5 x 1014 Hz.
.
5.0 x 10-19 J
Using complete subshell notation (1s22s22p6, and so forth), predict the electron configurations of Cs2+
1s22s22p63s23p64s23d104p65s24d105p5
A red laser pointer emits light with a wavelength of 700nm. A fancy green laser pointer emits light with a wavelength of 500nm. Which emits more energy per photon?
green: 4.0 x 10-19J
Red: 2.8 x 10-19J
Green emits more energy