Statements (28)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
isotope
|
| gptkbp:atomicNumber |
19
|
| gptkbp:category |
alkali metal isotope
|
| gptkbp:containsElement |
potassium
|
| gptkbp:decaysTo |
argon-40
calcium-40 |
| gptkbp:discoveredBy |
gptkb:Bertram_Boltwood
|
| gptkbp:discoveredIn |
1907
|
| gptkbp:foundIn |
nature
|
| gptkbp:halfLife |
1.248×10^9 years
|
| https://www.w3.org/2000/01/rdf-schema#label |
K-40
|
| gptkbp:massNumber |
40
|
| gptkbp:mode |
gptkb:beta_decay
electron capture |
| gptkbp:naturalAbundance |
0.0117%
|
| gptkbp:neutrons |
21
|
| gptkbp:parent |
potassium
Ca-40 Ar-40 |
| gptkbp:protons |
19
|
| gptkbp:radioactive |
true
|
| gptkbp:spin |
4-
|
| gptkbp:stable |
false
|
| gptkbp:symbol |
gptkb:40K
|
| gptkbp:usedIn |
radiometric dating
potassium-argon dating |
| gptkbp:bfsParent |
gptkb:The_Wrath_of_Vajra
|
| gptkbp:bfsLayer |
7
|