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.
There is one in Russia, which is rich in diamonds as well as chromium. Among the isotopes of this element are 53Cr, 54Cr, and 52Cr, the last being the most abundant of the three. The half-life of one of the radioisotopes of chromium is extremely long â the most stable one, 50Cr, has a half-life of over 1.8Ã1017 years. On the other hand, the radioisotope 51Cr has a half-life of less than 28 days. The rest of the radioactive isotopes have even shorter half-lives - under 24 hours.