{"version":"1.0","type":"link","title":"Isotopes of potassium - Newikis","description":"Potassium (19K) has 25 known isotopes from 34K to 57K as well as 31K, as well as an unconfirmed report of 59K. Three of those isotopes occur naturally: the two stable forms 39K (93.26%) and 41K (6.72%), and the long-lived radioisotope 40K (0.012%).","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400}