자연계에 존재하는 탈륨의 안정 동위 원소는 2종으로 203Tl, 205Tl이 있다. 205Tl은 넵투늄 계열의 붕괴 사슬의 최종 붕괴 생성물이다. == == 핵종기호 과거 명칭 Z(p) N(n) 동위 원소 질량 (u) 반감기 붕괴방식ε: 전자 포획IT: 이성질핵 전이 붕괴생성물 핵스핀 전형적동위 원소구성비(몰 분율) 자연적구성비변동 범위(몰 분율) 들뜬 에너지 176Tl 81 95 176.00059(21)# 5.2(+30-14) ms (3-,4-,5-) 177Tl 81 96 176.996427(27) 18(5) ms 176Hg (1/2+) (드묾) 173Au 177mTl 807(18) keV 230(40) µs 176Hg (11/2-) 173Au 178Tl 81 97 177.99490(12)# 255(10) ms 174Au (드묾) 177Hg 179Tl 81 98 178.99109(5) 270(30) ms 175Au (1/2+) (드묾) 178Hg 179mTl 860(30)# keV 1.60(16) ms 175Au (9/2-) IT (드묾) 179Tl 180Tl 81 99 179.98991(13)# 1.5(2) (75%) 176Au β+ (25%) 180Hg SF (10−4%) '''100Ru''', '''80Kr''' 181Tl 81 100 180.986257(10) 3.2(3) 177Au 1/2+# β+ 181Hg 181mTl 857(29) keV 1.7(4) ms 177Au 9/2-# β+ 181Hg 182Tl 81 101 181.98567(8) 2.0(3) β+ (96%) 182Hg 2-# (4%) 178Au 182m1Tl 100(100)# keV 2.9(5) 178Au (7+) β+ (드묾) 182Hg 182m2Tl 600(140)# keV 10- 183Tl 81 102 182.982193(10) 6.9(7) β+ (98%) 183Hg 1/2+# (2%) 179Au 183m1Tl 630(17) keV 53.3(3) ms IT (99.99%) 183Tl 9/2-# (0.01%) 179Au 183m2Tl 976.8(3) keV 1.48(10) µs (13/2+) 184Tl 81 103 183.98187(5) 9.7(6) β+ 184Hg 2-# 184m1Tl 100(100)# keV 10# β+ (97.9%) 184Hg 7+# (2.1%) 180Au 184m2Tl 500(140)# keV >20 ns (10-) 185Tl 81 104 184.97879(6) 19.5(5) 181Au 1/2+# β+ 185Hg 185mTl 452.8(20) keV 1.93(8) IT (99.99%) 185Tl 9/2-# (0.01%) 181Au β+ 185Hg 186Tl 81 105 185.97833(20) 40# β+ 186Hg (2-) (0.006%) 182Au 186m1Tl 320(180) keV 27.5(10) β+ 186Hg (7+) 186m2Tl 690(180) keV 2.9(2) (10-) 187Tl 81 106 186.975906(9) ~51 β+ 187Hg (1/2+) (드묾) 183Au 187mTl 335(3) keV 15.60(12) 183Au (9/2-) IT 187Tl β+ 187Hg 188Tl 81 107 187.97601(4) 71(2) β+ 188Hg (2-) 188m1Tl 40(30) keV 71(1) β+ 188Hg (7+) 188m2Tl 310(30) keV 41(4) ms (9-) 189Tl 81 108 188.973588(12) 2.3(2) min β+ 189Hg (1/2+) 189mTl 257.6(13) keV 1.4(1) min β+ (96%) 189Hg (9/2-) IT (4%) 189Tl 190Tl 81 109 189.97388(5) 2.6(3) min β+ 190Hg 2(-) 190m1Tl 130(90)# keV 3.7(3) min β+ 190Hg 7(+#) 190m2Tl 290(70)# keV 750(40) µs (8-) 190m3Tl 410(70)# keV >1 µs 9- 191Tl 81 110 190.971786(8) 20# min β+ 191Hg (1/2+) 191mTl 297(7) keV 5.22(16) min β+ 191Hg 9/2(-) 192Tl 81 111 191.97223(3) 9.6(4) min β+ 192Hg (2-) 192m1Tl 160(50) keV 10.8(2) min β+ 192Hg (7+) 192m2Tl 407(54) keV 296(5) ns (8-) 193Tl 81 112 192.97067(12) 21.6(8) min β+ 193Hg 1/2(+#) 193mTl 369(4) keV 2.11(15) min IT (75%) 193Tl 9/2- β+ (25%) 193Hg 194Tl 81 113 193.97120(15) 33.0(5) min β+ 194Hg 2- (10−7%) 190Au 194mTl 300(200)# keV 32.8(2) min β+ 194Hg (7+) 195Tl 81 114 194.969774(15) 1.16(5) β+ 195Hg 1/2+ 195mTl 482.63(17) keV 3.6(4) IT 195Tl 9/2- 196Tl 81 115 195.970481(13) 1.84(3) β+ '''196Hg''' 2- 196mTl 394.2(5) keV 1.41(2) β+ (95.5%) '''196Hg''' (7+) IT (4.5%) 196Tl 197Tl 81 116 196.969575(18) 2.84(4) β+ 197Hg 1/2+ 197mTl 608.22(8) keV 540(10) ms IT 197Tl 9/2- 198Tl 81 117 197.97048(9) 5.3(5) β+ '''198Hg''' 2- 198m1Tl 543.5(4) keV 1.87(3) β+ (54%) '''198Hg''' 7+ IT (46%) 198Tl 198m2Tl 687.2(5) keV 150(40) ns (5+) 198m3Tl 742.3(4) keV 32.1(10) ms (10-)# 199Tl 81 118 198.96988(3) 7.42(8) β+ '''199Hg''' 1/2+ 199mTl 749.7(3) keV 28.4(2) ms IT 199Tl 9/2- 200Tl 81 119 199.970963(6) 26.1(1) β+ '''200Hg''' 2- 200m1Tl 753.6(2) keV 34.3(10) ms IT 200Tl 7+ 200m2Tl 762.0(2) keV 0.33(5) µs 5+ 201Tl 81 120 200.970819(16) 72.912(17) '''201Hg''' 1/2+ 201mTl 919.50(9) keV 2.035(7) ms IT 201Tl (9/2-) 202Tl 81 121 201.972106(16) 12.23(2) β+ '''202Hg''' 2- 202mTl 950.19(10) keV 572(7) µs 7+ 203Tl 81 122 202.9723442(14) '''관측상 안정''' 1/2+ 0.2952(1) 0.29494-0.29528 203mTl 3400(300) keV 7.7(5) µs (25/2+) 204Tl 81 123 203.9738635(13) 3.78(2) β- (97.1%) '''204Pb''' 2- (2.9%) '''204Hg''' 204m1Tl 1104.0(4) keV 63(2) µs (7)+ 204m2Tl 2500(500) keV 2.6(2) µs (12-) 204m3Tl 3500(500) keV 1.6(2) µs (20+) 205Tl 81 124 204.9744275(14) '''관측상 안정''' 1/2+ 0.7048(1) 0.70472-0.70506 205m1Tl 3290.63(17) keV 2.6(2) µs 25/2+ 205m2Tl 4835.6(15) keV 235(10) ns (35/2-) 206Tl 라듐 E'' 81 125 205.9761103(15) 4.200(17) min β- '''206Pb''' 0- 미량 206mTl 2643.11(19) keV 3.74(3) min IT 206Tl (12-) 207Tl 악티늄 C'' 81 126 206.977419(6) 4.77(2) min β- '''207Pb''' 1/2+ 미량 207mTl 1348.1(3) keV 1.33(11) IT (99.9%) 207Tl 11/2- β- (0.1%) '''207Pb''' 208Tl 토륨 C'' 81 127 207.9820187(21) 3.053(4) min β- '''208Pb''' 5(+) 미량 209Tl 81 128 208.985359(8) 2.161(7) min β- 209Pb (1/2+) 210Tl 라듐 C″ 81 129 209.990074(12) 1.30(3) min β- (99.991%) 210Pb (5+)# 미량 β-, (0.009%) 209Pb 211Tl 81 130 210.99348(22)# 1# min>300 ns 1/2+# 212Tl 81 131 211.99823(32)# 30# s>300 ns 5+# == 참고 == == 각주 == 동위 원소 분류:원소별 동위 원소 목록