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.
Astatine (At), radioactive chemical element and the heaviest member of the halogen elements, or Group 17 (VIIa) of the periodic table.
From the Isotopes section of Wikipedia's article on Technetium : Technetium, with atomic number (denoted Z) 43, is the lowest-numbered element in the periodic table that is exclusively radioactive.The second-lightest, exclusively radioactive element, promethium, has an atomic number of 61.r is there a good account of how Tc falls short of stability for atomic weights 96-100? â Niel de Beaudrap Oct 17 '12 at 18:12. If there are no beta-unstable isobars, is this really a good way to examine why there are no beta-stable isotopes of Z=43? - Yes, because beta-stability depends of proton-neutron ratio.