Which of these elements is the least reactive? A.
sodium

B.
krypton

C.
chlorine

D.
aluminum

This class has taught you that the use of science and medicine in practical ways has become an international endeavor. one of the greatest examples of an international science accomplishment is which allows the profiling of human dna, useful not only to science but also medicine. a) forensic science b) the fbi c) the human genome project d) bioterrorism

What element is able to combine with itself and hydrogen to form large molecules ?

Which two criteria must be met before scientist can use radiocarbon dating? explain your answer