Term: Sodium, Description: Chemical element with atomic number 11, Question: Did the sodium is a radioactive element?, Answer:Yes
Fact1: Sodium has one naturally occurring isotope.  Fact2: The nucleus of this isotope contains 11 protons and 12 neutrons and is not radioactive Fact3: All are radioactive. Sodium-22, sodium's most stable radioactive isotope, has a half-life of 2.6 years. Fact4: Radioactive elements are made up of atoms whose nuclei are unstable 