Maintenance script: Presentation V4: sitasi, referensi, Math, Wikimedia Commons, dan atribusi

2026-08-27T14:14:48Z

Presentation V4: sitasi, referensi, Math, Wikimedia Commons, dan atribusi

Maintenance script: Impor teks terkontrol dari Wikipedia bahasa Indonesia; revisi 21353095; atribusi sumber disertakan.

2026-08-27T13:55:07Z

Impor teks terkontrol dari Wikipedia bahasa Indonesia; revisi 21353095; atribusi sumber disertakan.

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'''[[Lantanum]]''' ('''57La''') yang terbentuk secara alami terdiri dari satu [[isotop]] [[Isotop stabil|stabil]] (139La) dan satu isotop [[Peluruhan radioaktif|radioaktif]] (138La), dengan isotop yang stabil, 139La, menjadi yang paling melimpah (99,91% [[Kelimpahan alami unsur|kelimpahan alami]]). Ada 38 [[Radionuklida|radioisotop]] yang telah dikarakterisasi, dengan yang paling stabil adalah 138La, dengan [[waktu paruh]] 1,02 tahun; 137La, dengan waktu paruh 60.000 tahun; dan 140La, dengan waktu paruh 1,6781 hari. Isotop radioaktif yang tersisa memiliki waktu paruh kurang dari satu hari dan sebagian besar memiliki waktu paruh kurang dari 1 menit. Unsur ini juga memiliki 12 [[isomer nuklir]], yang berumur paling panjang adalah 132mLa, dengan waktu paruh 24,3 menit.

Isotop lantanum memiliki [[Massa atom relatif|berat atom]] berkisar dari 116,95 [[Dalton (satuan)|u]] (117La) hingga 154,96 u (155La).

==Daftar isotop==

| rowspan=2|117La
| rowspan=2 style="text-align:right" | 57
| rowspan=2 style="text-align:right" | 60
| rowspan=2|116,95007(43)#
| rowspan=2|23,5(26) [[Mili-|m]]dtk
| [[Peluruhan beta|β+]]
| 117Ba
| rowspan=2|(3/2+, 3/2−)
| rowspan=2|
| rowspan=2|

| [[Emisi proton|p]]
| 116Ba

| style="text-indent:1em" | 117mLa
| colspan="3" style="text-indent:2em" | 151(12) keV
| 10(5) mdtk
|
|
| (9/2+)
|
|

| 118La
| style="text-align:right" | 57
| style="text-align:right" | 61
| 117,94673(32)#
| 200# mdtk
| β+
| 118Ba
|
|
|

| 119La
| style="text-align:right" | 57
| style="text-align:right" | 62
| 118,94099(43)#
| 1# dtk
| β+
| 119Ba
| 11/2−#
|
|

| rowspan=2|120La
| rowspan=2 style="text-align:right" | 57
| rowspan=2 style="text-align:right" | 63
| rowspan=2|119,93807(54)#
| rowspan=2|2,8(2) dtk
| β+
| 120Ba
| rowspan=2|
| rowspan=2|
| rowspan=2|

| β+, p
| 119Cs

| rowspan=2|121La
| rowspan=2 style="text-align:right" | 57
| rowspan=2 style="text-align:right" | 64
| rowspan=2|120,93301(54)#
| rowspan=2|5,3(2) dtk
| β+
| 121Ba
| rowspan=2|11/2−#
| rowspan=2|
| rowspan=2|

| β+, p
| 120Cs

| rowspan=2|122La
| rowspan=2 style="text-align:right" | 57
| rowspan=2 style="text-align:right" | 65
| rowspan=2|121,93071(32)#
| rowspan=2|8,6(5) dtk
| β+
| 122Ba
| rowspan=2|
| rowspan=2|
| rowspan=2|

| β+, p
| 121Cs

| 123La
| style="text-align:right" | 57
| style="text-align:right" | 66
| 122,92624(21)#
| 17(3) dtk
| β+
| 123Ba
| 11/2−#
|
|

| 124La
| style="text-align:right" | 57
| style="text-align:right" | 67
| 123,92457(6)
| 29,21(17) dtk
| β+
| 124Ba
| (7−, 8−)
|
|

| style="text-indent:1em" | 124mLa
| colspan="3" style="text-indent:2em" | 100(100)# keV
| 21(4) dtk
|
|
| low(+#)
|
|

| 125La
| style="text-align:right" | 57
| style="text-align:right" | 68
| 124,920816(28)
| 64,8(12) dtk
| β+
| 125Ba
| (11/2−)
|
|

| style="text-indent:1em" | 125mLa
| colspan="3" style="text-indent:2em" | 107,0(10) keV
| 390(40) mdtk
|
|
| (3/2+)
|
|

| 126La
| style="text-align:right" | 57
| style="text-align:right" | 69
| 125,91951(10)
| 54(2) dtk
| β+
| 126Ba
| (5)(+#)
|
|

| style="text-indent:1em" | 126mLa
| colspan="3" style="text-indent:2em" | 210(410) keV
| 20(20) dtk
|
|
| (0−, 1−, 2−)
|
|

| 127La
| style="text-align:right" | 57
| style="text-align:right" | 70
| 126,916375(28)
| 5,1(1) mnt
| β+
| 127Ba
| (11/2−)
|
|

| rowspan=2 style="text-indent:1em" | 127mLa
| rowspan=2 colspan="3" style="text-indent:2em" | 14,8(12) keV
| rowspan=2|3,7(4) mnt
| β+
| 127Ba
| rowspan=2|(3/2+)
| rowspan=2|
| rowspan=2|

| [[Transisi isomerik|IT]]
| 127La

| 128La
| style="text-align:right" | 57
| style="text-align:right" | 71
| 127,91559(6)
| 5,18(14) mnt
| β+
| 128Ba
| (5+)
|
|

| style="text-indent:1em" | 128mLa
| colspan="3" style="text-indent:2em" | 100(100)# keV
| <1,4 mnt
| IT
| 128La
| (1+, 2−)
|
|

| 129La
| style="text-align:right" | 57
| style="text-align:right" | 72
| 128,912693(22)
| 11,6(2) mnt
| β+
| 129Ba
| 3/2+
|
|

| style="text-indent:1em" | 129mLa
| colspan="3" style="text-indent:2em" | 172,1(4) keV
| 560(50) mdtk
| IT
| 129La
| 11/2−
|
|

| 130La
| style="text-align:right" | 57
| style="text-align:right" | 73
| 129,912369(28)
| 8,7(1) mnt
| β+
| '''''130Ba'''''
| 3(+)
|
|

| 131La
| style="text-align:right" | 57
| style="text-align:right" | 74
| 130,91007(3)
| 59(2) mnt
| β+
| 131Ba
| 3/2+
|
|

| style="text-indent:1em" | 131mLa
| colspan="3" style="text-indent:2em" | 304,52(24) keV
| 170(10) [[Mikro-|μ]]dtk
|
|
| 11/2−
|
|

| 132La
| style="text-align:right" | 57
| style="text-align:right" | 75
| 131,91010(4)
| 4,8(2) jam
| β+
| '''132Ba'''
| 2−
|
|

| rowspan=2 style="text-indent:1em" | 132mLa
| rowspan=2 colspan="3" style="text-indent:2em" | 188,18(11) keV
| rowspan=2|24,3(5) mnt
| IT (76%)
| 132La
| rowspan=2|6−
| rowspan=2|
| rowspan=2|

| β+ (24%)
| '''132Ba'''

| 133La
| style="text-align:right" | 57
| style="text-align:right" | 76
| 132,90822(3)
| 3,912(8) jam
| β+
| 133Ba
| 5/2+
|
|

| 134La
| style="text-align:right" | 57
| style="text-align:right" | 77
| 133,908514(21)
| 6,45(16) mnt
| β+
| '''134Ba'''
| 1+
|
|

| 135La
| style="text-align:right" | 57
| style="text-align:right" | 78
| 134,906977(11)
| 19,5(2) jam
| β+
| '''135Ba'''
| 5/2+
|
|

| 136La
| style="text-align:right" | 57
| style="text-align:right" | 79
| 135,90764(6)
| 9,87(3) mnt
| β+
| '''136Ba'''
| 1+
|
|

| style="text-indent:1em" | 136mLa
| colspan="3" style="text-indent:2em" | 255(9) keV
| 114(3) mdtk
| IT
| 136La
| (8)(−#)
|
|

| 137La
| style="text-align:right" | 57
| style="text-align:right" | 80
| 136,906494(14)
| 6(2) thn
| [[Penangkapan elektron|EC]]
| '''137Ba'''
| 7/2+
|
|
| [[Radionuklida punah|punah]]

| rowspan=2|138La
| rowspan=2 style="text-align:right" | 57
| rowspan=2 style="text-align:right" | 81
| rowspan=2|137,907112(4)
| rowspan=2|'''1,02(1) thn'''
| β+ (66,4%)
| '''138Ba'''
| rowspan=2|5+
| rowspan=2|9,0(1)
| rowspan=2|

| β− (33,6%)
| '''138Ce'''

| style="text-indent:1em" | 138mLa
| colspan="3" style="text-indent:2em" | 72,57(3) keV
| 116(5) [[Nano-|n]]dtk
|
|
| (3)+
|
|

| 139La
| style="text-align:right" | 57
| style="text-align:right" | 82
| 138,9063533(26)
| colspan=3 align=center|'''Stabil'''
| 7/2+
| 0,99910(1)
|

| 140La
| style="text-align:right" | 57
| style="text-align:right" | 83
| 139,9094776(26)
| 1,6781(3) hri
| β−
| '''140Ce'''
| 3−
|
|

| 141La
| style="text-align:right" | 57
| style="text-align:right" | 84
| 140,910962(5)
| 3,92(3) jam
| β−
| 141Ce
| (7/2+)
|
|

| 142La
| style="text-align:right" | 57
| style="text-align:right" | 85
| 141,914079(6)
| 91,1(5) mnt
| β−
| '''142Ce'''
| 2−
|
|

| 143La
| style="text-align:right" | 57
| style="text-align:right" | 86
| 142,916063(17)
| 14,2(1) mnt
| β−
| 143Ce
| (7/2)+
|
|

| 144La
| style="text-align:right" | 57
| style="text-align:right" | 87
| 143,91960(5)
| 40,8(4) dtk
| β−
| 144Ce
| (3−)
|
|

| 145La
| style="text-align:right" | 57
| style="text-align:right" | 88
| 144,92165(10)
| 24,8(20) dtk
| β−
| 145Ce
| (5/2+)
|
|

| rowspan=2|146La
| rowspan=2 style="text-align:right" | 57
| rowspan=2 style="text-align:right" | 89
| rowspan=2|145,92579(8)
| rowspan=2|6,27(10) dtk
| β− (99,99%)
| 146Ce
| rowspan=2|2−
| rowspan=2|
| rowspan=2|

| β−, [[Emisi neutron|n]] (0,007%)
| 145Ce

| style="text-indent:1em" | 146mLa
| colspan="3" style="text-indent:2em" | 130(130) keV
| 10,0(1) dtk
| β−
| 146Ce
| (6−)
|
|

| rowspan=2|147La
| rowspan=2 style="text-align:right" | 57
| rowspan=2 style="text-align:right" | 90
| rowspan=2|146,92824(5)
| rowspan=2|4,015(8) dtk
| β− (99,96%)
| 147Ce
| rowspan=2|(5/2+)
| rowspan=2|
| rowspan=2|

| β−, n (0,04%)
| 146Ce

| rowspan=2|148La
| rowspan=2 style="text-align:right" | 57
| rowspan=2 style="text-align:right" | 91
| rowspan=2|147,93223(6)
| rowspan=2|1,26(8) dtk
| β− (99,85%)
| 148Ce
| rowspan=2|(2−)
| rowspan=2|
| rowspan=2|

| β−, n (0,15%)
| 147Ce

| rowspan=2|149La
| rowspan=2 style="text-align:right" | 57
| rowspan=2 style="text-align:right" | 92
| rowspan=2|148,93473(34)#
| rowspan=2|1,05(3) dtk
| β− (98,6%)
| 149Ce
| rowspan=2|5/2+#
| rowspan=2|
| rowspan=2|

| β−, n (1,4%)
| 148Ce

| rowspan=2|150La
| rowspan=2 style="text-align:right" | 57
| rowspan=2 style="text-align:right" | 93
| rowspan=2|149,93877(43)#
| rowspan=2|510(30) mdtk
| β− (97,3%)
| 150Ce
| rowspan=2|(3+)
| rowspan=2|
| rowspan=2|

| β−, n (2,7%)
| 149Ce

| 151La
| style="text-align:right" | 57
| style="text-align:right" | 94
| 150,94172(43)#
| 300# mdtk [>300 ndtk]
| β−
| 151Ce
| 5/2+#
|
|

| 152La
| style="text-align:right" | 57
| style="text-align:right" | 95
| 151,94625(43)#
| 200# mdtk [>300 ndtk]
| β−
| 152Ce
|
|
|

| 153La
| style="text-align:right" | 57
| style="text-align:right" | 96
| 152,94962(64)#
| 150# mdtk [>300 ndtk]
| β−
| 153Ce
| 5/2+#
|
|

| 154La
| style="text-align:right" | 57
| style="text-align:right" | 97
| 153,95450(64)#
| 100# mdtk
| β−
| 154Ce
|
|
|

| 155La
| style="text-align:right" | 57
| style="text-align:right" | 98
| 154,95835(86)#
| 60# mdtk
| β−
| 155Ce
| 5/2+#
|
|

==Referensi==

* Massa isotop dari:
**
* Komposisi isotop dan massa atom standar dari:
**
**
* Data waktu paruh, spin, dan isomer dipilih dari sumber-sumber berikut.
**
**
**

== Sumber dan atribusi ==

Konten artikel ini diadaptasi dari [https://id.wikipedia.org/w/index.php?title=Isotop+lantanum&oldid=21353095 Wikipedia bahasa Indonesia], revisi 21353095 (2022-07-08T18:01:23Z), yang tersedia berdasarkan lisensi Creative Commons Atribusi-BerbagiSerupa (CC BY-SA). Mohon gunakan konten ini secara bijak serta sesuai dengan ketentuan lisensi yang berlaku.

Isotop lantanum - Riwayat revisi

Maintenance script: Presentation V4: sitasi, referensi, Math, Wikimedia Commons, dan atribusi

Maintenance script: Impor teks terkontrol dari Wikipedia bahasa Indonesia; revisi 21353095; atribusi sumber disertakan.