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Unformatted text preview: Name (Last, First): (’4 8% Quiz 2
UCSD PID: A________ Chemist/y 6A Fa/l 2008
Signature: Form E06 Total Points: / 20 You have 10 minutes to complete th/s quiz. Please show all your work, but write the
answers in the designated spaces. The points a//otted for each question are indicated in
parenthesis. Potentially Helpful Constants: Potentially Helpful Equations:
Mass of electron, me = 9.109 38 X 10'31 kg
Mass of proton, mp = 1.672 62 x 10'27 kg EK = Vsz
Mass of neutron, mn = 1.674 93 x 10'27 kg EK = hv  a)
e = 1.602 18 x10‘19 c E _ q.q2
g = 9.806 65 mos'2 r ‘ 4%“
_ 8 1 c — 2.997 92 x 1015ms E : mgh
R=3.28984x10 Hz 6” A
h=6.2 08 10:34. W 6 6 x J s E: m
Potentially Helpful Conversion Factors: Apa’ﬂc/ﬁ: n/(mvgl
1J=1Nom V;RI1_LI
1N=1kgms‘2 _;n13 _ 3 3 L _ 1L10 cm Mp: yzﬁ 1 eV = 1.602 18 x 10491 1. An atom has a principal quantum number of n = 7. Answer the following;
(a) What are all of the possible orbital angular momentum numbers (I)? (2 points) elzéérée (b) In the highest allowed orbital momentum number you got in part (a), what are all of the possible magnetic quantum numbers (ml)? (2 points)
.4) «9 Jr 5% «2’! o walese
2. Draw representative shapes for the following orbitals on the provided axes: (6 points)
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z Z Name (Last, First): Quiz 2
UCSD PID: A_________ Chemistry 6A Fall 2008 Signature: Form 505 3. Jerry tells you in section that the solutions to the ScifOedinger equation are the emission
curves of blackbody radiation. Is he correct? If not, what are the solutions? (4 points) /\0 (70lther o—l: {Abadl‘i’ljaf (MIA N6
‘H’HL/ mfo KIA—"C oﬂoifalaamx linex angles. 4. Jerry measures the atomic line spectra of hydrogen, but wants you to do the calculations.
As you may have noticed, he is a selﬁsh and lazy TA.
(a) What is the frequency of a transition from n = 4 to n = 2? Show work! (3 points) i ,,i
if: n1]
: 3,’b‘10‘i0‘§t’%[€% ‘~ 6.162‘1643240“r He 4.]? HOW HZ (b) A metal ejects electrons with a velocity of 253 km/s when subjected to the light in part (a).
What is the work function for this metal? If you didn't get an answer for (a), use 105 nm radiation as your light source. (3 points)
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7/ : Lgmq “0493 , 1.”\S3A0'7’°3 : \fmwo‘”3 I 1 yin/4; \oolc \Cor W OWIHLAQQH Name (Last, First): Quiz 1
UCSD PID: A________ Chemist/y 6A Fai/ 2008
Signature: Form 507 Total Points: / 20 You have 10 minutes to complete this quiz. P/ease show all your work, but write the
answers in the designated spaces. The points a/iotz‘ed for each question are indicated in
parenthesis. Potentially Helpful Constants: Potentially Helpful Equations:
Mass of electron, me = 9.109 38 X 10'31 kg EK = Vzmi/ Mass of proton, mp = 1.672 62 x 10‘27 kg EK = hv  (D Mass of neutron, mn = 1.674 93 x 10‘27 kg _ qqu e = 1.602 18 x 10'19 c Er] ‘ 4,80, 9 = 9.806 65 mos2
c = 2.997 92 x 108 ms:1 _
R = 3.289 84 x 1015 Hz 6 — vi h = 6.626 08 x 10341.5 5 = “V ,
Aparz‘ic/e = my) El, =mgh Potentially Helpful Conversion Factors: v Z eri_ 1 1
1.] = 1 Nom Lnlz n73]
1N=1l<gms‘2 Am >yﬁ‘
1 L = 103 cm3 p— 2 1 ev = 1.602 18 x 10ng 1. An atom has a principal quantum number of n = 7. Answer the following:
(a) What are all of the possible orbital angular momentum numbers (I)? (2 points) 01234255 (b) In the highest allowed orbital momentum number you got in part (a), what are all of the
possible magnetic quantum numbers (ml)? (2 points) «9'5 4 2) ’Ll o lbgﬁrib 2. Draw representative shapes for the following orbitals on the provided axes: (6 points)
35 Zpy 3dxy
Y Y Y Name (Last, First): Quiz 1 UCSD PID: A________ Chemistry 6A Fall 2008 Signature: Form 507 3. Jerry tells you in section that an electron in a hydrogen atom at n = 00 has an energy of 0.
Is he correct? Explain why he is or isn't. (4 points) ,l ,. . i
l. 7 _ ‘ Aawgo A1, " W 4. Jerry measures the atomic line spectra of hydrogen, but wants you to do the calculations.
As you may have noticed, he is a selﬁsh and lazy TA. (a) What is the frequency of a transition from n = 5 to n = 2? Show work! (3 points)
l
'U/ 5 K [it 1’ j
/\ /\ ' l 1/ I ' ’ : r< (0‘; H? jib a]: 540610 7ND"F H; (b) A metal ejects electrons with a velocity of 275 km/s when subjected to the light in part (a).
What is the work function for this metal? If you didn't get an answer for (a), use 105 nm
radiation as your light source. (3 points) z ((9.6% mo'g‘tjgﬂmoqxco‘tm) viémq KIO'3‘kj)
,_ 4,5??? 5 546" j  2.4++34' “0'7” (23600:) M/$)
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(i WOW (0 ‘16)) (wSWM/s) 'v \.<Z‘IM >404"; . ’94"V‘t§‘f H040 :hﬁeﬂqseg no” Name (Last; First): [’4 Quiz 1
UCSD PID: A_________ Chemist/y 6A Fall 2008
Signature: Form E08 Total Points: / 20 You have 10 minutes to complete this quiz. Please show all your work, but write the
answers in the designated spaces. The points allotted for each question are indicated in
parenthesis. Potentially Helpful Constants: Potentially Helpful Equations:
Mass of electron, me = 9.109 38 x 10‘31 kg EK = Mzmv2
Mass of proton, mp = 1.672 62 x 10'27 kg EK = hv  a)
Mass of neutron, mn = 1.674 93 x 10'27 kg E _ (1qu
e = 1.602 18 x 10219 c n ‘ 4380,,
g = 9.806 65 mos E = mgh
c = 2.997 92 x 108 ms;1 "
R = 3.289 84 x 10135 Hz 2: , 4 :
h 6.626 08 x 10 J 5 Apart/d6 : h/(mv)
Potentially Helpful Conversion Factors: V : R[_1_ 1J=1Nom 2 Ln]: nil
ill: 11059.an Mp2 W7 1 eV = 1.602 18 X 10”] 1. An atom has a principal quantum number of n = 7. Answer the following:
(a) What are all of the possible orbital angular momentum numbers (I)? (2 points) 0 iL34r§Jo (b) In the highest allowed orbital momentum number you got in part (a), what are all of the
possible magnetic quantum numbers (m.)? (2 points) /é/§,4» ’3 (L4 0 l7/34r'56 2. Draw representative shapes for the following orbitals on the provided axes: (6 points)
35 sz 3dz2
z z z Name (Last, First): Quiz 1
UCSD PID: A_________ Chemistry 6A Fai/ 2008 Signature: Form E08 3. Jerry tells you in section that the solutions to the Schoedinger equation can describe the
atomic orbitals of a hydrogen atom. Is he correct? If not, what do they describe? (4 points) 709, CkZLﬂ/‘Af’i. its eme/Je My} 4. Jerry measures the atomic line spectra of hydrogen, but wants you to do the calculations. As you may have noticed, he is a selﬁsh and lazy TA.
(a) What is the frequency of a transition from n = 3 to n = 1? Show work! (3 points) ’U’? lV[Al'z' [if] .Ll _ " ‘9
2%.L40No'ﬂig ,L 191W“? . l§
1.411110 Hz (b) A metal ejects electrons with a velocity of 365 km/s when subjected to the light in part (a).
What is the work function for this metal? If you didn't get an answer for (a), use 205 nm
radiation as your light source. (3 points) US
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This note was uploaded on 12/07/2009 for the course CHEM CHEM 6A taught by Professor Czarkowski during the Fall '07 term at UCSD.
 Fall '07
 Czarkowski
 Basic Chemistry

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