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.
Plutonium is a radioactive metallic element with the atomic number 94. It was discovered in 1940 by scientists studying how to split atoms to make atomic bombs.Plutonium is created in a reactor when uranium atoms absorb neutrons. Nearly all plutonium is man-made.rintable Version. Plutonium is a radioactive metallic element with the atomic number 94. It was discovered in 1940 by scientists studying how to split atoms to make atomic bombs. Plutonium is created in a reactor when uranium atoms absorb neutrons. Nearly all plutonium is man-made.