also see: 1  couldn't care less. 2  for all (I care) 3  in care of. 4  in charge (the care of) 5  take care. 6  take care of. 7  tender loving care. 8  that's (takes care of) that.
Plutonium is a member of the actinide family. The actinides occur in Row 7 of the periodic table. The periodic table is a chart that shows how chemical elements are related to one another. The actinides get their name from element 89, actinium, which is sometimes considered the first member of the family.he half life of a radioactive element is the time it takes for half of a sample of the element to break down. Consider the isotope plutonium-242, with its half life of 376,300 years. In 376,300 years (one half life), only half of a sample prepared today would still be plutonium-242.
What is Plutonium-238? National Aeronautics and Space Administration What is plutonium? â¢ Plutonium is a metallic chemical element with a silvery-white color. The plutonium used on NASA spacecraft is transformed in a laboratory into a silvery-black ceramic material called plutonium dioxide. Plutonium-238 is a special material that emits steady heat due to its natural radioactive decay. Several unique features of plutonium-238 have made it the material of choice to help produce electrical power for more than two-dozen U.S. space missions that have been enabled by radioisotope power systems (RPS).