Interview Question in Frequency Spectrum
Interview Question :: I think I might be retarded
I'm confused about sample problems in my book. I don't want the calculation because I'm hoping to figure out how to do these on my own if I have the answers. If you don't know all, feel free to answer what you do know. I renumbered them in order for your convenience.
1) Calculate the wavelength, in nanometers, of visible light having a frequency of 4.37 x 1014s-1.
A) 12.0 nm
B) 343 nm
C) 686 nm
D) 674 nm
E) None of the above
2) For the hydrogen atom, En = -(1/n2)RH, where RH = 2.18 x 10-18 J. The wavelength of the transition from the ground state to the n = 3 state is:
A) 1.03 x 10-7 m
B) 6.56 x 10-8 m
C) -1.03 x 10-7 m
D) -6.76 x 10-8 m
E) 4.27 x 10-8 m
3) Which of the following is not a possible value of ml for an electron with l = 2?
A) -1
B) 0
C) +1
D) +2
E) +3 I SUSPECT IT IS E
4) The set of quantum numbers that correctly describes an electron in a 3p orbital is:
A) n = 3; l = 0; ml = 0; ms = 0
B) n = 3; l = 2; ml = -2, -1, 0, 1, or 2; ms = +1/2 or -1/2
C) n = 3; l = 1; ml = -1, 0, or 1; ms = +1/2 or - 1/2
D) n = 4; l = 0; ml = -1, 0, or 1; ms = +1/2 or -1/2
E) None of the above
5) What is the total number of orbitals associated with the principal quantum number n = 2?
A) 1
B) 2
C) 3
D) 4
E) None of the above MY GUESS IS E
6) What is the maximum number of electrons that can be accommodated in the shell with n = 4?
A) 32
B) 18 MY GUESS
C) 24
D) 10
E) None of the above
7) An atom of chromium has ___ unpaired electrons and is ___.
A) 3, diamagnetic
B) 5, diamagnetic
C) 3, paramagnetic
D) 5, paramagnetic
E) 6, paramagnetic
8) The electronic configuration and filling order of the element whose atomic number is 26 is:
A) 1s22s22p63s23p64s03d8
B) 1s22s22p63s23p63d64s2
C) 1s22s22p63s23p64s23d6
D) 1s22s22p63s23p64s23d44p2
E) None of the above
9) An atom in its ground state contains 33 electrons. How many of these electrons are in p orbitals?
A) 15 MY GUESS
B) 12
C) 3
D) 33
E) None of the above
10) Using the noble gas core designation, which of the configurations below correctly describes the ground state electron configuration of Cu?
A) [Ne]4s23d9
B) [Ar]4s23d9
C) [Kr]4s13d10
D) [Ar]4s13d10
E) None of the above
11) Emission spectra:
A) cannot be used to identify an unknown atom
B) can be used to identify unknown atoms
C) can be explained by the movement of protons colliding with electrons
D) none of the above
12) Energy emission by an electron is an energy releasing process, while energy absorption requires an input of energy.
A) True
B) False
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