Fu Chun Yu Lab Notebooks

min = 2.6 uN spin = 1/2 Sept. 1, 1949 Se- Sample Spin 1/2 7.7 gms of SeO2 dissolved in 5 cc. H2O makes 7 cc soln Molarity = 10 M 1.2 gms of MnSO4 H2O added not all dissolved SEARCH From 7.00 MC -> 5.30 MC v(Na23) = 7.29 MC RANGE OF MAGNETIC MOMENT 0.709 uN -> 0.537 uN Sept. 2 1949 Search B Remarks: very moving in places From 7.20 MC -> 5.55 MC v(Na23) = 5.025 MC N.G. Record thrown away RANGE 1.058 uN -> 0.815 uN Sept. 5 1949 Search C. more or less OK. From 6.50 -> 4.53 MC v(Na23) = 5.02 MC RANGE 0.955 uN -> 0.665 uN

Jan. 30, 1950 Bi209 (7010-7000KC) Time Distance bet Markers Marker Resonance distance Resonance frequency 4 min 13.0 mm #1 8.0 mm 7004.0KC 20 13.0 " 8.5 7003.6 30 13.0 " 8.5 7003.6 42 13.0" 8.5 7003.6 v(Bi209)=7003.6KC D2(6700->6690KC) Time Distance bet Markers Markers Resonance Distance Resonance Frequency 15 min 12.5 mm #1 11.5 mm 6690.9KC 26 12.5 " 12.0 6690.5 36 12.5 " 12.0 6690.5 50 12.0 " 11.5 6690.5 v(D2)=6690.5 KC v(Bi209)/v(D2)=7003.6/6690.5=1.04680(1+-2x10-5) u(Bi29)=9/2x0.857632x1.04680=4.03996

Nuclear pairs differing by neutrons or protons

Isotope Percent Abundance Spin Magnetic Moment

Sept. 14, '49

Pt¹⁹⁵ (5975 [right arrow] 5950)

Na²³ (7350 [right arrow] 7325)

H₀ ~ 6600 gauss

Na²³ Resonance (7350 [right arrow] 7325 KC)

Pt¹⁹⁵ (5975 [right arrow] 5950 KC)

Sept. 14, '49

Weight of 30 cc. beaker = 22.065 gms Weight of beaker plus Hg = 36.960 [gms] Weight of Hg = 14.915 gms to be dissolved in 4cc. conc. HNO₃ in 10 cc. H₂O Weight of Hg undissolved = 8.305 mgs Hg dissolved = 14.915 - 8.305 = 6.610 gms.

FAILED! HgCl₂ precipitated by MnCl₂

Weight of 30 cc. beaker = 21.015 gms [Weight] of beaker + Hg = 29.330 [gms] [Weight] of Hg = 8.315 gms to be dissolved in 4 c.c. conc. HNO₃ + 10 c.c. H₂O

Samples of Hg(NO₃)₂ was prepared. ~ 7.0 gms of Hg contained in a soln of 9 c.c. volume with 7.75 gms of Fe (NO₃)₃ ⋅ 9 H₂O (404 = M.W.) Made two samples

Hg #2 Hg ~ 3.88 x 5/6 = 3.24 M Fe ~ 2.13 x 5/6 = 1.78 M

26.78 22.07 _______ 4.71 ~ Hg

32.21 22.07 __________ 10.14

25.425 22.070 ___________ 355

32.210 25.425 ___________ 7.785

Hg#3 [4.71 gms in bec of Hd] in sec of solu Hg (NO3)2

Cd.111 Molarity = 1.5/10x0.1445 = 1.04 M Molarity pf MnSO4 = 0.36/10x0.169 = 0.213 M Cd113 Molarity = 0.558/5x0.1445 = 0.772 M

20Ca 1s2 2s2 2p6 3s2 3p6 4s2 1s2 Zeff=20-0.35=19.65 20-1.70-7x0.35= 2s22p6 20-4.15=15.85 3s23p9 20-11.25=8.75 4s2 20-17.15=2.85 Sum of Zeff of diff shells =19.65+15.85+4/9X8.75+2.85/16 =39.57 Diamagntic conectim factor=2/3(1/137)2[?]Zeff =3.552x10-5[?]Zeff =1040x10-3 0.259 Haitrss value 1041x10-3 Thomas Ferris value 1073x10-3 Total Zff Z for [?K]=37.08

26Fe 1s2 2s2 3s2 3p6 3d6 4s2 1s2 2eff=26-0.35=25.65 2s22p6 26-4.15=21.85 3s23p6 26-11.25=14.75 3d6 26-18x1.00-5x0.35=6.35 4s2 26-10x1.00-14x0.85-0.35=26-22.25=3.75 Sum of Zeff=25.65+21.85+4/9x14.75+3/9x6.35+1/16x3.85 =56.19 amegnetic curectim=3.552x10-5x56.19=2.00x10-3 haitree value=2.02x10-3 thomas ferris value=2.46x10-3 0.259

29Cu 1s2 2s2 2p6 3s2 3p6 3d10 4s 1s2 Zeff = 28-0.35=28.65 2s2 2p6 29-4.15=24.85 3s2 3p6 29-11.25=17.75 3d10 29-18x1.00-9x0.35=7.85 4s 29-21.9=7.10 Sum of Zeff=28.65+24.85+4/9x17.75+5/9x7.85+7.20/32 =65.97 Dia Conectim=3.552x10-5x75.97=2.34x10-3 37Rb 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p6 5s 1s2 zeff=37-0.35=36.65 2s2 2p6 37-4.15=32.85 3s2 3p6 37-11.25=25.75 3d10 37-21.15=15.85 4s2 4p6 37-22.15=14.85 5s 37-10x1.00-14x0.85 -7x0.35=12.65 37-28x1.00-8x0.85=2.2 sum of Zeff=36.65+32.85+4/9x25.75+5/9x15.85+1/4x12.65+2.2/50=92.95 Dia curtivm=3.552x10-5x92.95=3.30x10-3