Also see. Stanley Cup Playoffs from 1918 to present, and Avco Cup Playoffs from 1973-1979. Click on the Year or Lg for playoff results. Click on the Champion or Runner-Up for team roster, statistics, and leaders.lso see. Stanley Cup Playoffs from 1918 to present, and Avco Cup Playoffs from 1973-1979. Click on the Year or Lg for playoff results. Click on the Champion or Runner-Up for team roster, statistics, and leaders.
The rate of. decay is a fixed rate called a half-life. The half-life of a radioactive isotope refers to the amount of time. required for half of a quantity of a radioactive isotope to decay. Carbon-14 has a half-life of 5,730 years, which means that if. you take one gram of carbon-14, half of it will decay in 5,730. years. Different isotopes have different half-lives.
Three other radon isotopes have a half-life of over an hour: 211 Rn, 210 Rn and 224 Rn. The 220 Rn isotope is a natural decay product of the most stable thorium isotope (232 Th), and is commonly referred to as thoron. It has a half-life of 55.6 seconds and also emits alpha radiation.hree other radon isotopes have a half-life of over an hour: 211 Rn, 210 Rn and 224 Rn. The 220 Rn isotope is a natural decay product of the most stable thorium isotope (232 Th), and is commonly referred to as thoron. It has a half-life of 55.6 seconds and also emits alpha radiation.