Isotop platina

Isotop utama platina
Iso­top Peluruhan
kelim­pahan waktu paruh (t1/2) mode pro­duk
190Pt 0,012% 6,5×1011 thn α 186Os
192Pt 0,782% stabil
193Pt sintetis 50 thn ε 193Ir
194Pt 32,864% stabil
195Pt 33,775% stabil
196Pt 25,211% stabil
198Pt 7,356% stabil
Berat atom standar Ar°(Pt)
  • 195,084±0,009
  • 195,08±0,02 (diringkas)[1]

Platina (78Pt) yang terbentuk secara alami terdiri dari lima isotop stabil (192Pt, 194Pt, 195Pt, 196Pt, 198Pt) dan satu radioisotop sangat berumur panjang (190Pt, waktu paruhnya 6,50×1011 tahun). Ada juga 34 radioisotop sintetis yang diketahui, yang berumur paling panjang adalah 193Pt dengan waktu paruh 50 tahun. Semua isotop lain memiliki waktu paruh di bawah satu tahun, sebagian besar di bawah satu hari. Semua isotop platinium bersifat radioaktif atau stabil secara pengamatan, artinya mereka diprediksi radioaktif tetapi tidak ada peluruhan aktual yang teramati.

Daftar isotop

Nuklida
[n 1]
Z N Massa isotop (Da)
[n 2][n 3]
Waktu paruh
[n 4]
Mode
peluruhan

[n 5]
Isotop
anak

[n 6][n 7]
Spin dan
paritas
[n 8][n 9]
Kelimpahan alami (fraksi mol)
Energi eksitasi[n 9] Proporsi normal Rentang variasi
165Pt[2] 78 87 260(+260-90) μdtk α 161Os
166Pt 78 88 165,99486(54)# 260(+300-60) μdtk[2] α 162Os 0+
167Pt 78 89 166,99298(44)# 1,1(2) mdtk[2] α 163Os 7/2−#
168Pt 78 90 167,98815(22) 2,00(18) mdtk α 164Os 0+
β+ (langka) 168Ir
169Pt 78 91 168,98672(22)# 3,7(15) mdtk α 165Os 3/2−#
β+ (langka) 169Ir
170Pt 78 92 169,982495(20) 14,0(2) mdtk α (98%) 166Os 0+
β+ (2%) 170Ir
171Pt 78 93 170,98124(9) 51(2) mdtk α (99%) 167Os 3/2−#
β+ (1%) 171Ir
172Pt 78 94 171,977347(14) 98,4(24) mdtk α (77%) 168Os 0+
β+ (23%) 172Ir
173Pt 78 95 172,97644(6) 365(7) mdtk α (84%) 169Os 5/2−#
β+ (16%) 173Ir
174Pt 78 96 173,972819(13) 0,889(17) dtk α (83%) 170Os 0+
β+ (17%) 174Ir
175Pt 78 97 174,972421(20) 2,53(6) dtk α (64%) 171Os 5/2−#
β+ (36%) 175Ir
176Pt 78 98 175,968945(15) 6,33(15) dtk β+ (62%) 176Ir 0+
α (38%) 172Os
177Pt 78 99 176,968469(16) 10,6(4) dtk β+ (94,4%) 177Ir 5/2−
α (5,6%) 173Os
177mPt 147,4(4) keV 2,2(3) μdtk 1/2−
178Pt 78 100 177,965649(12) 21,1(6) dtk β+ (92,3%) 178Ir 0+
α (7,7%) 174Os
179Pt 78 101 178,965363(10) 21,2(4) dtk β+ (99,76%) 179Ir 1/2−
α (0,24%) 175Os
180Pt 78 102 179,963031(12) 56(2) dtk β+ (99,7%) 180Ir 0+
α (0,3%) 176Os
181Pt 78 103 180,963097(16) 52,0(22) dtk β+ (99,93%) 181Ir 1/2−
α (0,074%) 177Os
182Pt 78 104 181,961171(17) 2,2(1) mnt β+ (99,96%) 182Ir 0+
α (0,038%) 178Os
183Pt 78 105 182,961597(17) 6,5(10) mnt β+ (99,99%) 183Ir 1/2−
α (0,0096%) 179Os
183m1Pt 34,50(8) keV 43(5) dtk β+ (99,99%) 183Ir (7/2)−
α (4×10−4%) 179Os
IT 183Pt
183m2Pt 195,68(11) keV >150 ndtk (9/2)+
184Pt 78 106 183,959922(19) 17,3(2) mnt β+ (99,99%) 184Ir 0+
α (0,00169%) 180Os
184mPt 1839,4(16) keV 1,01(5) mdtk IT 184Pt 8−
185Pt 78 107 184,96062(4) 70,9(24) mnt β+ (99,99%) 185Ir (9/2+)
α (),005%) 181Os
185mPt 103,4(2) keV 33,0(8) mnt β+ (98%) 185Ir (1/2−)
α (2%) 181Os
186Pt 78 108 185,959351(23) 2,08(5) jam β+ (99,99%) 186Ir 0+
α (1,4×10−4%) 182Os
187Pt 78 109 186,96059(3) 2,35(3) jam β+ 187Ir 3/2−
188Pt 78 110 187,959395(6) 10,2(3) hri EC (99,99%) 188Ir 0+
α (2,6×10−5%) 184Os
189Pt 78 111 188,960834(12) 10,87(12) jam β+ 189Ir 3/2−
189m1Pt 172,80(6) keV 464(25) ndtk 9/2−
189m2Pt 191,6(4) keV 143(5) μdtk (13/2+)
190Pt 78 112 189,959932(6) 6,5(3)×1011 thn α 186Os 0+ 1,4(1)×10−4
191Pt 78 113 190,961677(5) 2,862(7) hri EC 191Ir 3/2−
191m1Pt 100,67(2) keV >1 μdtk (9/2)−
191m2Pt 149,04(2) keV 95(5) μdtk (13/2)+
192Pt 78 114 191,9610380(27) Stabil Secara Pengamatan[n 10] 0+ 0,00782(7)
193Pt 78 115 192,9629874(18) 50(6) thn EC 193Ir 1/2−
193mPt 149,78(4) keV 4,33(3) hri IT 193Pt 13/2+
194Pt 78 116 193,9626803(9) Stabil Secara Pengamatan[n 11] 0+ 0,32967(99)
195Pt 78 117 194,9647911(9) Stabil Secara Pengamatan[n 12] 1/2− 0,33832(10)
195mPt 259,30(8) keV 4,010(5) hri IT 195Pt 13/2+
196Pt 78 118 195,9649515(9) Stabil Secara Pengamatan[n 13] 0+ 0,25242(41)
197Pt 78 119 196,9673402(9) 19,8915(19) jam β 197Au 1/2−
197mPt 399,59(20) keV 95,41(18) mnt IT (96,7%) 197Pt 13/2+
β (3,3%) 197Au
198Pt 78 120 197,967893(3) Stabil Secara Pengamatan[n 14] 0+ 0,07163(55)
199Pt 78 121 198,970593(3) 30,80(21) mnt β 199Au 5/2−
199mPt 424(2) keV 13,6(4) dtk IT 199Pt (13/2)+
200Pt 78 122 199,971441(22) 12,5(3) jam β 200Au 0+
201Pt 78 123 200,97451(5) 2,5(1) mnt β 201Au (5/2−)
202Pt 78 124 201,97574(32) 44(15) jam β 202Au 0+
202mPt 1788.5(0.4) keV 141(7) μdtk IT 202Pt (7-)
203Pt 78 125 202,97893(200)# 22(4) dtk β 203Au (1/2-)
203mPt 3100# keV 641(55) μdtk IT 203Pt 33/2+#
204Pt 78 126 203,98076(200)# 10,3(14) dtk β 204Au 0+
204m1Pt 1995,1(0,7) keV 5,5(7) μdtk IT 204Pt (5-)
204m2Pt 2035(23) keV 55(3) μdtk IT 204Pt (7-)
204m3Pt 3193(23) keV 146(14) ndtk IT 204Pt (10+)
Header & footer tabel ini:  view 
  1. ^ mPt – Isomer nuklir tereksitasi.
  2. ^ ( ) – Ketidakpastian (1σ) diberikan dalam bentuk ringkas dalam tanda kurung setelah digit terakhir yang sesuai.
  3. ^ # – Massa atom bertanda #: nilai dan ketidakpastian yang diperoleh bukan dari data eksperimen murni, tetapi setidaknya sebagian dari tren dari Permukaan Massa (trends from the Mass Surface, TMS).
  4. ^ Waktu paruh tebal – hampir stabil, waktu paruh lebih lama dari umur alam semesta.
  5. ^ Mode peluruhan:
    EC: Penangkapan elektron
    IT: Transisi isomerik
  6. ^ Simbol miring tebal sebagai anak – Produk anak hampir stabil.
  7. ^ Simbol tebal sebagai anak – Produk anak stabil.
  8. ^ ( ) nilai spin – Menunjukkan spin dengan argumen penempatan yang lemah.
  9. ^ a b # – Nilai yang ditandai # tidak murni berasal dari data eksperimen, tetapi setidaknya sebagian dari tren nuklida tetangga (trends of neighboring nuclides, TNN).
  10. ^ Diyakini mengalami peluruhan α menjadi 188Os dengan waktu paruh lebih dari 60×1015 tahun
  11. ^ Diyakini mengalami peluruhan α menjadi 190Os
  12. ^ Diyakini mengalami peluruhan α menjadi 191Os
  13. ^ Diyakini mengalami peluruhan α menjadi 192Os
  14. ^ Diyakini mengalami peluruhan β ganda menjadi 198Hg dengan waktu paruh lebih dari 320×1012 tahun

Referensi

  1. ^ Meija, J.; et al. (2016). "Atomic weights of the elements 2013 (IUPAC Technical Report)". Pure Appl. Chem. 88 (3): 265–91. doi:10.1515/pac-2015-0305. 
  2. ^ a b c Hilton, J.; et al. (2019). "α-spectroscopy studies of the new nuclides 165Pt and 170Hg" (PDF). Physical Review C. 100 (1): 014305. doi:10.1103/PhysRevC.100.014305. 

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