Which the following occur as the wavelength of a photon increases? Calculate the

Question

Which the following occur as the wavelength of a photon increases? Calculate the energy of light with a wavelength of 703 nm. Calculate the frequency of light with a wavelength of 660 nm For n = 3, what are the possible sublevels? What are the possible orbitals for n = 3? What value of l is represented by a d orbital? Which color of visible light would a photon have the highest energy? Which of the following sets of quantum numbers contains an error? Which element would have the following configuration in the ground state? Identify the correct value for a 2p sublevel. How many valence electrons are shown in the Lewis structure of NO_2^+? Determine the number of unpaired electrons in ground slate atoms of P and Cl, respectively. Which of the following gives the correct number of valence electrons for Ge?

Explanation / Answer

1)

when WL increases, then:

frequency decreases, since ratio is f = c/WL, as WL increases, f must decrease

all other are false

2)

WL = 703 mn = 703*10^-9 m

E = hc/ WL

h = planc constant 6.62*10^-34 and c = speed of ligh 3*10^8

E = (6.626*10^-34)(3*10^8) /(703*10^-9) = 2.82759*10^-9 J answer is "E"

3)

calculate F of WL = 660 nm

F = c/WL

F = (3*10^8)/(660*10^-9) = 4.54545*10^14 Hz answer is "C"

4)

for n = 3 sublevels are noted as l

by definition, l = n-1 = 3-1 = 2

therefore, 0,1,2 are correct which is C

NOTE:

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