Isotop kalium
Daftar isotop

| Nuklida | Z> Energi eksitasi | N> Energi eksitasi | Massa isotop (Da) > Energi eksitasi | Waktu paruh | Modepeluruhan | Isotopanak | Spin dan paritas | Kelimpahan alami (fraksi mol)> Proporsi normal | Kelimpahan alami (fraksi mol)> Rentang variasi |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 31K | 19 | 12 |  | <10 pdtk | 3p | 28S |  |  |   |  |  |  |  |  |  |  |  |  |  |
| 33K | 19 | 14 | 33,00756(21)# | <25 ndtk | p | 32Ar | 3/2+# |  |  |  |  |  |  |  |  |  |  |  |  |
| 34K | 19 | 15 | 33,99869(21)# | <40 ndtk | p | 33Ar | 1+# |  |  |  |  |  |  |  |  |  |  |  |  |
| 35K | 19 | 16 | 34,9880054(6) | 178(8) mdtk | β+ (99,63%) | 35Ar | 3/2+ |  |  |  |  |  |  |  |  |  |  |  |  |
| 35K | 19 | 16 | 34,9880054(6) | 178(8) mdtk | β+, p (0,37%) | 34Cl | 3/2+ |  |  |  |  |  |  |  |  |  |  |  |  |
| 36K | 19 | 17 | 35,9813020(4) | 341(3) mdtk | β+ (99,95%) | 36Ar | 2+ |  |  |  |  |  |  |  |  |  |  |  |  |
| 36K | 19 | 17 | 35,9813020(4) | 341(3) mdtk | β+, p (0,048%) | 35Cl | 2+ |  |  |  |  |  |  |  |  |  |  |  |  |
| 36K | 19 | 17 | 35,9813020(4) | 341(3) mdtk | β+, α (0,0034%) | 32S | 2+ |  |  |  |  |  |  |  |  |  |  |  |  |
| 37K | 19 | 18 | 36,97337589(10) | 1,2365(9) dtk | β+ | 37Ar | 3/2+ |  |  |  |  |  |  |  |  |  |  |  |  |
| 38K | 19 | 19 | 37,96908112(21) | 7,636(18) mnt | β+ | 38Ar | 3+ |  |  |  |  |  |  |  |  |  |  |  |  |
| 38m1K | 130,50(28) keV | 130,50(28) keV | 130,50(28) keV | 924,46(14) mdtk | β+ | 38Ar | 0+ |  |  |  |  |  |  |  |  |  |  |  |  |
| 38m2K | 3458,0(2) keV | 3458,0(2) keV | 3458,0(2) keV | 21,95(11) μdtk | IT | 38K | (7+) |  |  |  |  |  |  |  |  |  |  |  |  |
| 39K | 19 | 20 | 38,963706487(5) | Stabil | Stabil | Stabil | 3/2+ | 0,932581(44) |  |  |  |  |  |  |  |  |  |  |  |
| 40K | 19 | 21 | 39,96399817(6) | 1,248(3)×109 thn | β− (89,28%) | 40Ca | 4− | 1,17(1)×10−4 |  |  |  |  |  |  |  |  |  |  |  |
| 40K | 19 | 21 | 39,96399817(6) | 1,248(3)×109 thn | EC (10,72%) | 40Ar | 4− | 1,17(1)×10−4 |  |  |  |  |  |  |  |  |  |  |  |
| 40K | 19 | 21 | 39,96399817(6) | 1,248(3)×109 thn | β+ (0,001%) | 40Ar | 4− | 1,17(1)×10−4 |  |  |  |  |  |  |  |  |  |  |  |
| 40mK | 1643,639(11) keV | 1643,639(11) keV | 1643,639(11) keV | 336(12) ndtk | IT | 40K | 0+ |  |  |  |  |  |  |  |  |  |  |  |  |
| 41K | 19 | 22 | 40,961825258(4) | Stabil | Stabil | Stabil | 3/2+ | 0,067302(44) |  |  |  |  |  |  |  |  |  |  |  |
| 42K | 19 | 23 | 41,96240231(11) | 12,355(7) jam | β− | 42Ca | 2− |  |  |  |  |  |  |  |  |  |  |  |  |
| 43K | 19 | 24 | 42,9607347(4) | 22,3(1) jam | β− | 43Ca | 3/2+ |  |  |  |  |  |  |  |  |  |  |  |  |
| 43mK | 738,30(6) keV | 738,30(6) keV | 738,30(6) keV | 200(5) ndtk | IT | 43K | 7/2− |  |  |  |  |  |  |  |  |  |  |  |  |
| 44K | 19 | 25 | 43,9615870(5) | 22,13(19) mnt | β− | 44Ca | 2− |  |  |  |  |  |  |  |  |  |  |  |  |
| 45K | 19 | 26 | 44,9606915(6) | 17,8(6) mnt | β− | 45Ca | 3/2+ |  |  |  |  |  |  |  |  |  |  |  |  |
| 46K | 19 | 27 | 45,9619816(8) | 105(10) dtk | β− | 46Ca | 2− |  |  |  |  |  |  |  |  |  |  |  |  |
| 47K | 19 | 28 | 46,9616616(15) | 17,50(24) dtk | β− | 47Ca | 1/2+ |  |  |  |  |  |  |  |  |  |  |  |  |
| 48K | 19 | 29 | 47,9653412(8) | 6,8(2) dtk | β− (98,86%) | 48Ca | 1− |  |  |  |  |  |  |  |  |  |  |  |  |
| 48K | 19 | 29 | 47,9653412(8) | 6,8(2) dtk | β−, n (1,14%) | 47Ca | 1− |  |  |  |  |  |  |  |  |  |  |  |  |
| 49K | 19 | 30 | 48,9682108(9) | 1,26(5) dtk | β−, n (86%) | 48Ca | (3/2+) |  |  |  |  |  |  |  |  |  |  |  |  |
| 49K | 19 | 30 | 48,9682108(9) | 1,26(5) dtk | β− (14%) | 49Ca | (3/2+) |  |  |  |  |  |  |  |  |  |  |  |  |
| 50K | 19 | 31 | 49,972380(8) | 472(4) mdtk | β− (71%) | 50Ca | 0− |  |  |  |  |  |  |  |  |  |  |  |  |
| 50K | 19 | 31 | 49,972380(8) | 472(4) mdtk | β−, n (29%) | 49Ca | 0− |  |  |  |  |  |  |  |  |  |  |  |  |
| 50mK | 171,4(4) keV | 171,4(4) keV | 171,4(4) keV | 125(40) ndtk | IT | 50K | (2−) |  |  |  |  |  |  |  |  |  |  |  |  |
| 51K | 19 | 32 | 50,975828(14) | 365(5) mdtk | β−, n (65%) | 50Ca | 3/2+ |  |  |  |  |  |  |  |  |  |  |  |  |
| 51K | 19 | 32 | 50,975828(14) | 365(5) mdtk | β− (35%) | 51Ca | 3/2+ |  |  |  |  |  |  |  |  |  |  |  |  |
| 52K | 19 | 33 | 51,98160(4) | 110(4) mdtk | β−, n (74%) | 51Ca | 2−# |  |  |  |  |  |  |  |  |  |  |  |  |
| 52K | 19 | 33 | 51,98160(4) | 110(4) mdtk | β− (23,7%) | 52Ca | 2−# |  |  |  |  |  |  |  |  |  |  |  |  |
| 52K | 19 | 33 | 51,98160(4) | 110(4) mdtk | β−, 2n (2,3%) | 50Ca | 2−# |  |  |  |  |  |  |  |  |  |  |  |  |
| 53K | 19 | 34 | 52,98680(12) | 30(5) mdtk | β−, n (64%) | 52Ca | (3/2+) |  |  |  |  |  |  |  |  |  |  |  |  |
| 53K | 19 | 34 | 52,98680(12) | 30(5) mdtk | β− (26%) | 53Ca | (3/2+) |  |  |  |  |  |  |  |  |  |  |  |  |
| 53K | 19 | 34 | 52,98680(12) | 30(5) mdtk | β−, 2n (10%) | 51Ca | (3/2+) |  |  |  |  |  |  |  |  |  |  |  |  |
| 54K | 19 | 35 | 53,99463(64)# | 10(5) mdtk | β− (>99,9%) | 54Ca | 2−# |  |  |  |  |  |  |  |  |  |  |  |  |
| 54K | 19 | 35 | 53,99463(64)# | 10(5) mdtk | β−, n (<0,1%) | 53Ca | 2−# |  |  |  |  |  |  |  |  |  |  |  |  |
| 55K | 19 | 36 | 55,00076(75)# | 3# mdtk | β− | 55Ca | 3/2+# |  |  |  |  |  |  |  |  |  |  |  |  |
| 55K | 19 | 36 | 55,00076(75)# | 3# mdtk | β−, n | 54Ca | 3/2+# |  |  |  |  |  |  |  |  |  |  |  |  |
| 56K | 19 | 37 | 56,00851(86)# | 1# mdtk | β− | 56Ca | 2−# |  |  |  |  |  |  |  |  |  |  |  |  |
| 56K | 19 | 37 | 56,00851(86)# | 1# mdtk | β−, n | 55Ca | 2−# |  |  |  |  |  |  |  |  |  |  |  |  |
| 57K | 19 | 38 |  |  | β− | 57Ca |  |  |  |  |  |  |  |  |  |  |  |  |  |
| 59K | 19 | 40 |  |  | β− | 59Ca |  |  |  |  |  |  |  |  |  |  |  |  |  |
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↑  mK –  Isomer nuklir tereksitasi.
↑  ( ) –  Ketidakpastian (1σ) diberikan dalam bentuk ringkas dalam tanda kurung setelah digit terakhir yang sesuai.
↑  # –  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).
1 2 3  # –  Nilai yang ditandai # tidak murni berasal dari data eksperimen, tetapi setidaknya sebagian dari tren nuklida tetangga (trends of neighboring nuclides, TNN).
↑  Simbol tebal sebagai anak –  Produk anak stabil.
↑  ( ) nilai spin –  Menunjukkan spin dengan argumen penempatan yang lemah.
↑  Digunakan dalam penanggalan kalium-argon
↑  Radionuklida primordial
↑  Penemuan isotop ini belum dikonfirmasi