4. imagine you have a radioactive sample containing both virtualium and decayed atoms of virtualium. after analysis, you find it contains 10 atoms of virtualium and 40 decayed atoms. how old is your sample?

Why do consumers feel warmer after eating a meal

Which of the following statements is true? a. elements in the last period are radioactive. b. atomic weight is the same as atomic mass. c. elements in the same group have the same number of electron shells. d. atomic number equals the number of neutrons in the nucleus of an atom.

What term describes technology that operates on an atomic level