थ्यूलियम

परिचय

परमाणु क्रमांक: 69
समूह: कोई नहीं
परमाण्विक भार: 168.93421
अवधि: 6
सीएएस संख्या: 7440-30-4

वर्गीकरण

धातु
अधातु
धातु के रूप-रंग का एक अधातु पदार्थ
अलकाली धातु
क्षार पृथ्वी धातु
संक्रमण धातु
Chalcogen
हलोजन
नोबल गैस
Lanthanoid
Actinoid
दुर्लभ पृथ्वी तत्व
प्लेटिनम समूह धातु
Transuranium
कोई स्थिर आइसोटोप
ठोस
तरल
गैस
ठोस (भविष्यवाणी की)

विवरण • उपयोग करता है / समारोह

Discovered in 1879 by Cleve. Thulium occurs in small quantities along with other rare earths in a number of minerals. It is obtained commerciallyfrom monazite, which contains about 0.007% of the element. Thulium is the least abundant of the rare earth elements, but with new sources recentlydiscovered, it is now considered to be about as rare as silver, gold, or cadmium. Ion-exchange and solvent extraction techniques have recently permittedmuch easier separation of the rare earths, with much lower costs. Only a few years ago, thulium metal was not obtainable at any cost; in 1996 the oxidecost $20/g. Thulium metal powder now costs $60/g (99.9%). Thulium can be isolated by reduction of the oxide with lanthanum metal or by calciumreduction of the anhydrous fluoride. The pure metal has a bright, silvery luster. It is reasonably stable in air, but the metal should be protected frommoisture in a closed container. The element is silver-gray, soft, malleable, and ductile, and can be cut with a knife. Thirty eight isotopes and isomersare known, with atomic masses ranging from 146 to 176. Natural thulium, which is 100% 169Tm, is stable. Because of the relatively high price of themetal, thulium has not yet found many practical applications. 169Tm bombarded in a nuclear reactor can be used as a radiation source in portable Xrayequipment. 171Tm is potentially useful as an energy source. Natural thulium also has possible use in ferrites (ceramic magnetic materials) usedin microwave equipment. As with other lanthanides, thulium has a low-to-moderate acute toxic rating. It should be handled with care. 1

भौतिक गुण

गलनांक:2*  1545 °C = 1818.15 K = 2813 °F
क्वथनांक:2* 1950 °C = 2223.15 K = 3542 °F
उच्च बनाने की क्रिया प्वाइंट:2 
तीन बिंदु:2 
महत्वपूर्ण बिंदु:2 
घनत्व:3  9.32 g/cm3

* - at 1 atm

ऋणावेशित सूक्ष्म अणु का विन्यास

ऋणावेशित सूक्ष्म अणु का विन्यास:  *[Xe] 6s2 4f13
खंड: f
उच्चतम अधिकृत एनर्जी लेवल: 6
अणु की संयोजन क्षमता: 2

क्वांटम संख्याएं:

n = 4
ℓ = 3
m = 2
ms = -½

संबंध

वैद्युतीयऋणात्मकता (पॉलिंग पैमाने):4 1.25
Electropositivity (पॉलिंग पैमाने): 2.75

आयनीकरण क्षमता   eV 5  kJ/mol  
1 6.18431    596.7
आयनीकरण क्षमता   eV 5  kJ/mol  
2 12.05    1162.6
आयनीकरण क्षमता   eV 5  kJ/mol  
3 23.68    2284.8
4 42.7    4119.9

ऊष्मारसायन

विशिष्ट ताप: 0.160 J/g°C 6 = 27.029 J/mol°C = 0.038 cal/g°C = 6.460 cal/mol°C
ऊष्मीय चालकता: 16.8 (W/m)/K, 27°C 7
फ्यूजन की गर्मी: 16.84 kJ/mol 8 = 99.7 J/g
वाष्पीकरण की ऊष्मा: 191 kJ/mol 9 = 1130.6 J/g
पदार्थ की अवस्था गठन की तापीय धारिता (ΔHf°)10 entropy (S°)10 गिब्स नि: शुल्क ऊर्जा (ΔGf°)10
(kcal/mol) (kJ/mol) (cal/K) (J/K) (kcal/mol) (kJ/mol)
(s) 0 0 17.69 74.01496 0 0
(g) 55.5 232.212 45.41 189.99544 47.2 197.4848

आइसोटोप

nuclide सामूहिक 11 हाफ लाइफ 11 परमाणु स्पिन 11 बंधन ऊर्जा
145Tm 144.97007(43)# 3.1(3) μs (11/2-) 1,144.30 MeV
146Tm 145.96643(43)# 240(30) ms (6-) 1,161.69 MeV
147Tm 146.96096(32)# 0.58(3) s 11/2- 1,169.76 MeV
148Tm 147.95784(43)# 0.7(2) s (10+) 1,187.15 MeV
149Tm 148.95272(32)# 0.9(2) s (11/2-) 1,195.22 MeV
150Tm 149.94996(21)# 3# s (1+) 1,212.60 MeV
151Tm 150.945483(22) 4.17(10) s (11/2-) 1,220.67 MeV
152Tm 151.94442(8) 8.0(10) s (2#)- 1,228.75 MeV
153Tm 152.942012(20) 1.48(1) s (11/2-) 1,236.82 MeV
154Tm 153.941568(15) 8.1(3) s (2-) 1,244.89 MeV
155Tm 154.939199(14) 21.6(2) s (11/2-) 1,262.27 MeV
156Tm 155.938980(17) 83.8(18) s 2- 1,270.35 MeV
157Tm 156.93697(3) 3.63(9) min 1/2+ 1,278.42 MeV
158Tm 157.936980(27) 3.98(6) min 2- 1,286.49 MeV
159Tm 158.93498(3) 9.13(16) min 5/2+ 1,294.56 MeV
160Tm 159.93526(4) 9.4(3) min 1- 1,302.63 MeV
161Tm 160.93355(3) 30.2(8) min 7/2+ 1,310.70 MeV
162Tm 161.933995(28) 21.70(19) min 1- 1,318.77 MeV
163Tm 162.932651(6) 1.810(5) h 1/2+ 1,326.85 MeV
164Tm 163.93356(3) 2.0(1) min 1+ 1,334.92 MeV
165Tm 164.932435(4) 30.06(3) h 1/2+ 1,342.99 MeV
166Tm 165.933554(13) 7.70(3) h 2+ 1,351.06 MeV
167Tm 166.9328516(29) 9.25(2) d 1/2+ 1,359.13 MeV
168Tm 167.934173(3) 93.1(2) d 3+ 1,367.20 MeV
169Tm 168.9342133(27) स्थिर 1/2+ 1,375.27 MeV
170Tm 169.9358014(27) 128.6(3) d 1- 1,383.34 MeV
171Tm 170.9364294(28) 1.92(1) a 1/2+ 1,391.42 MeV
172Tm 171.938400(6) 63.6(2) h 2- 1,399.49 MeV
173Tm 172.939604(5) 8.24(8) h (1/2+) 1,407.56 MeV
174Tm 173.94217(5) 5.4(1) min (4)- 1,406.31 MeV
175Tm 174.94384(5) 15.2(5) min (1/2+) 1,414.39 MeV
176Tm 175.94699(11) 1.85(3) min (4+) 1,422.46 MeV
177Tm 176.94904(32)# 90(6) s (7/2-) 1,430.53 MeV
178Tm 177.95264(43)# 30# s 1,429.29 MeV
179Tm 178.95534(54)# 20# s 1/2+# 1,437.36 MeV
मान चिह्नित # विशुद्ध रूप से प्रयोगात्मक डेटा से प्राप्त नहीं कर रहे हैं, लेकिन कम से कम आंशिक रूप से व्यवस्थित प्रवृत्तियों से। Spins कमजोर तर्क के साथ काम कोष्ठकों में संलग्न हैं। 11

प्रचुरता

पृथ्वी - स्रोत यौगिकों: phosphates 12
पृथ्वी - समुद्र के पानी: 0.00000017 mg/L 13
पृथ्वी -  भूपटल:  0.52 mg/kg = 0.000052% 13
पृथ्वी -  कुल:  35 ppb 14
पारा ग्रह) -  कुल:  27 ppb 14
शुक्र -  कुल:  37 ppb 14
Chondrites - कुल: 0.031 (relative to 106 atoms of Si) 15

यौगिकों

सुरक्षा जानकारी


सामग्री सुरक्षा डाटा शीट - ACI Alloys, Inc.

अधिक जानकारी के लिए

बाहरी कड़ियाँ:

पत्रिका:
(1) Folger, Tim. The Secret Ingredients of Everything. National Geographic, June 2011, pp 136-145.

सूत्रों का कहना है

(1) - Lide, David R. CRC Handbook of Chemistry and Physics, 83rd ed.; CRC Press: Boca Raton, FL, 2002; p 4:32.
(2) - Lide, David R. CRC Handbook of Chemistry and Physics, 83rd ed.; CRC Press: Boca Raton, FL, 2002; p 4:132.
(3) - Lide, David R. CRC Handbook of Chemistry and Physics, 84th ed.; CRC Press: Boca Raton, FL, 2002; p 4:39-4:96.
(4) - Dean, John A. Lange's Handbook of Chemistry, 11th ed.; McGraw-Hill Book Company: New York, NY, 1973; p 4:8-4:149.
(5) - Lide, David R. CRC Handbook of Chemistry and Physics, 83rd ed.; CRC Press: Boca Raton, FL, 2002; p 10:178 - 10:180.
(6) - Lide, David R. CRC Handbook of Chemistry and Physics, 83rd ed.; CRC Press: Boca Raton, FL, 2002; p 4:133.
(7) - Lide, David R. CRC Handbook of Chemistry and Physics, 83rd ed.; CRC Press: Boca Raton, FL, 2002; pp 6:193, 12:219-220.
(8) - Lide, David R. CRC Handbook of Chemistry and Physics, 83rd ed.; CRC Press: Boca Raton, FL, 2002; pp 6:123-6:137.
(9) - Lide, David R. CRC Handbook of Chemistry and Physics, 83rd ed.; CRC Press: Boca Raton, FL, 2002; pp 6:107-6:122.
(10) - Dean, John A. Lange's Handbook of Chemistry, 12th ed.; McGraw-Hill Book Company: New York, NY, 1979; p 9:4-9:94.
(11) - Atomic Mass Data Center. http://amdc.in2p3.fr/web/nubase_en.html (accessed July 14, 2009).
(12) - Silberberg, Martin S. Chemistry: The Molecular Nature of Matter and Change, 4th ed.; McGraw-Hill Higher Education: Boston, MA, 2006, p 965.
(13) - Lide, David R. CRC Handbook of Chemistry and Physics, 83rd ed.; CRC Press: Boca Raton, FL, 2002; p 14:17.
(14) - Morgan, John W. and Anders, Edward, Proc. Natl. Acad. Sci. USA 77, 6973-6977 (1980)
(15) - Brownlow, Arthur. Geochemistry; Prentice-Hall, Inc.: Englewood Cliffs, NJ, 1979, pp 15-16.