Seriy izotoplari - Isotopes of cerium

Ning asosiy izotoplari seriy  (58I)
IzotopChirish
mo'llikyarim hayot (t1/2)rejimimahsulot
134Cesin3.16 dε134La
136Ce0.186%barqaror
138Ce0.251%barqaror
139Cesin137.640 dε139La
140Ce88.449%barqaror
141Cesin32.501 dβ141Pr
142Ce11.114%barqaror
143Cesin33.039 soatβ143Pr
144Cesin284.893 dβ144Pr
Standart atom og'irligi Ar, standart(Ce)

Tabiiyki seriy (58Ce) 4 barqarordan iborat izotoplar: 136Ce, 138Ce, 140Idoralar va 142Ce, bilan 140Ce eng ko'p (88,48%) tabiiy mo'llik ) va nazariy jihatdan barqaror yagona; 136Ce, 138Idoralar va 142Ce o'tishi taxmin qilinmoqda ikki marta beta-parchalanish ammo bu jarayon hech qachon kuzatilmagan. 35 bor radioizotoplar eng barqaror mavjudot bilan tavsiflangan 144Ce, yarim umri 284,893 kun; 139Ce, yarim umri 137,640 kun va 141Ce, yarim umri 32,501 kun. Qolganlarning hammasi radioaktiv izotoplarning yarim umrlari 4 kundan kam va ularning ko'pchiligining 10 minutdan kam bo'lgan yarim umrlari bor. Ushbu element ham 10 ga ega meta davlatlar.

Seriy izotoplari ichida atom og'irligi 119 dan siz (119Ce) dan 157 u gacha (157Ce).

Izotoplar ro'yxati


Nuklid
[n 1]
ZNIzotopik massa (Da )
[n 2][n 3]
Yarim hayot
[n 4]
Chirish
rejimi

[n 5]
Qizim
izotop

[n 6]
Spin va
tenglik
[n 7][n 4]
Tabiiy mo'llik (mol qismi)
Qo'zg'alish energiyasiOddiy nisbatTurlanish oralig'i
119Ce5861118.95276(64)#200 # msβ+119La5/2+#
120Ce5862119.94664(75)#250 # msβ+120La0+
121Ce5863120.94342(54)#1.1 (1) sβ+121La(5/2)(+#)
122Ce5864121.93791(43)#2 # sβ+122La0+
β+, p121Ba
123Ce5865122.93540(32)#3.8 (2) sβ+123La(5/2)(+#)
β+, p122Ba
124Ce5866123.93041(32)#9.1 (12) sβ+124La0+
125Ce5867124.92844(21)#9,3 (3) sβ+125La(7/2−)
β+, p124Ba
126Ce5868125.92397(3)51.0 (3) sβ+126La0+
127Ce5869126.92273(6)29 (2) sβ+127La5/2+#
128Ce5870127.91891(3)3.93 (2) minβ+128La0+
129Ce5871128.91810(3)3,5 (3) minβ+129La(5/2+)
130Ce5872129.91474(3)22.9 (5) minβ+130La0+
130mCe2453,6 (3) keV100 (8) ns(7−)
131Ce5873130.91442(4)10.2 (3) minβ+131La(7/2+)
131mCe61,8 (1) keV5,0 (10) minβ+131La(1/2+)
132Ce5874131.911460(22)3.51 (11) soatβ+132La0+
132mCe2340,8 (5) keV9,4 (3) milIT132Ce(8−)
133Ce5875132.911515(18)97 (4) minβ+133La1/2+
133mCe37.1 (8) keV4.9 (4) dβ+133La9/2−
134Ce5876133.908925(22)3.16 (4) dEC134La0+
135Ce5877134.909151(12)17,7 (3) soatβ+135La1/2(+)
135mCe445,8 (2) keV20 (1) sIT135Ce(11/2−)
136Ce5878135.907172(14)Kuzatuv jihatidan barqaror[n 8]0+0.00185(2)0.00185–0.00186
136mCe3095,5 (4) keV2.2 (2) p10+
137Ce5879136.907806(14)9.0 (3) soatβ+137La3/2+
137mCe254,29 (5) keV34.4 (3) soatIT (99,22%)137Ce11/2−
β+ (.779%)137La
138Ce5880137.905991(11)Kuzatuv jihatidan barqaror[n 9]0+0.00251(2)0.00251–0.00254
138mCe2129.17 (12) keV8,65 (20) milIT138Ce7-
139Ce5881138.906653(8)137.641 (20) dEC139La3/2+
139mCe754,24 (8) keV56.54 (13) sIT139Ce11/2−
140Ce[n 10]5882139.9054387(26)Barqaror0+0.88450(51)0.88446–0.88449
140mCe2107,85 (3) keV7.3 (15) s6+
141Ce[n 10]5883140.9082763(26)32.508 (13) dβ141Pr7/2−
142Ce[n 10]5884141.909244(3)Kuzatuv jihatidan barqaror[n 11]0+0.11114(51)0.11114–0.11114
143Ce[n 10]5885142.912386(3)33.039 (6) soatβ143Pr3/2−
144Ce[n 10]5886143.913647(4)284.91 (5) dβ144mPr0+
145Ce5887144.91723(4)3.01 (6) minβ145Pr(3/2−)
146Ce5888145.91876(7)13.52 (13) minβ146Pr0+
147Ce5889146.92267(3)56.4 (10) sβ147Pr(5/2−)
148Ce5890147.92443(3)56 (1) sβ148Pr0+
149Ce5891148.9284(1)5.3 (2) sβ149Pr(3/2−)#
150Ce5892149.93041(5)4.0 (6) sβ150Pr0+
151Ce5893150.93398(11)1,02 (6) sβ151Pr3/2−#
152Ce5894151.93654(21)#1,4 (2) sβ152Pr0+
153Ce5895152.94058(43)#500 # ms [> 300 ns]β153Pr3/2−#
154Ce5896153.94342(54)#300 # ms [> 300 ns]β154Pr0+
155Ce5897154.94804(64)#200 # ms [> 300 ns]β155Pr5/2−#
156Ce5898155.95126(64)#150 # msβ156Pr0+
157Ce5899156.95634(75)#50 # msβ157Pr7/2+#
  1. ^ mCe - hayajonlangan yadro izomeri.
  2. ^ () - noaniqlik (1σ) tegishli oxirgi raqamlardan keyin qavs ichida ixcham shaklda berilgan.
  3. ^ # - Atom massasi # bilan belgilangan: qiymat va noaniqlik faqat eksperimental ma'lumotlardan emas, balki kamida qisman Mass Surface tendentsiyalaridan kelib chiqadi (TMS ).
  4. ^ a b # - # bilan belgilangan qiymatlar faqat eksperimental ma'lumotlardan kelib chiqmaydi, lekin hech bo'lmaganda qisman qo'shni nuklidlarning tendentsiyalaridan kelib chiqadi (TNN ).
  5. ^ Parchalanish usullari:
    EC:Elektronni tortib olish
    IT:Izomerik o'tish


    p:Proton emissiyasi
  6. ^ Qalin belgi qizi sifatida - qizi mahsulot barqaror.
  7. ^ () spin qiymati - zaif tayinlash argumentlari bilan spinni bildiradi.
  8. ^ $ Delta $ ga o'tish uchun nazariy+β+ yemirilish 136Ba bilan yarim hayot 38 × 10 dan yuqori15 yil
  9. ^ $ Delta $ ga o'tish uchun nazariy+β+ yemirilish 138Ba yarim umr 150 × 10 dan yuqori12 yil
  10. ^ a b v d e Parchalanish mahsuloti
  11. ^ $ Delta $ ga o'tish uchun nazariyβ yemirilish 142Nd 50 × 10 dan ortiq yarim umr bilan15 yil

Adabiyotlar

  1. ^ Meyja, Yuris; va boshq. (2016). "Elementlarning atom og'irliklari 2013 (IUPAC texnik hisoboti)". Sof va amaliy kimyo. 88 (3): 265–91. doi:10.1515 / pac-2015-0305.