Nuclear energy comes from an atom's a. shells b. charge c. nucleus d. electrons

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 is the mass of 0.46 mil of mgcl2

Select all of the methods through which a drug can enter your body. injection swallowing inhalation absorption