The maximum dimensions for your carry-on bag are: Length - 24 (61cm) including wheels and handles ; Width - 17 (43cm) Height - 10 (25cm) For additional carry-on items beyond the one-bag limit, each piece will incur a fee. Refer to the checked baggage page for more information.
Tritium (3H) is the most stable radioisotope of hydrogen. That is, of all radioactive isotopes of hydrogen, tritium is the least radioactive. It has a proton and 2 neutrons in its nucleus. Tritium decays through beta minus decay and changes to helium-3. It has a half-life of 12.32 years.
Questions. 1  Element X has a half-life of 6000 years. 2  Iron-59 has a half-life of 45.1 days. 3  A radioactive nucleus alpha decays to yield a sodium-24 nucleus in 14.8 hours. 4  If a sample is known to be about 10,740 years old has 400 C-14 atoms, how many atoms were in the sample when the organism died? 6 days ago.