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.
The halogen family is a group of reactive nonmetals. 1  Group 17 or VIIA. 2  Halogens. 3  7 valence electrons. 4  reactive nonmetals. 5  melting points and boiling points increase with increasing atomic number. 6  high electron affinities.