Anthem Blue Cross and Blue Shield is the trade name of: In Indiana: Anthem Insurance Companies, Inc. In Kentucky: Anthem Health Plans of Kentucky, Inc. In Missouri (excluding 30 counties in the Kansas City area): RightCHOICEÂ®. Managed Care, Inc. (RIT), Healthy AllianceÂ® Life Insurance Company (HALIC), and HMO Missouri, Inc. RIT and certain.
The most stable isotope of astatine is At-210, which has a half-life of about 8.1 hours. This isotope's primary decay mode is positron emission to the relatively long-lived alpha emitter, polonium-210. In total, only five isotopes of astatine have half-lives exceeding one hour: those between 207 and 211.
Tweet. : a heavy radioactive isotope of strontium of mass number 90 that has a half-life of 29 years, that is present in nuclear waste and fallout, and that is hazardous because like calcium it can be assimilated in biological processes and deposited in the bones of human beings and animals.See strontium 90 defined for kids. a heavy radioactive isotope of strontium having the mass number 90 that is present in the fallout from nuclear explosions and is hazardous because like calcium it can be assimilated in biological processes and deposited in the bones of human beings and animalsâcalled also radiostrontium.