Match the following: mass number [Choose ] atom [Choose ] number of protons protons plus neutrons electrons isotope The smallest particle of an element that retains the characteristics of the element protons and neutrons number of neutrons outside of nucleus number of electrons [ Choose] atomic number elements with the same number of protons and different number of neutrons mass number – number of protons [ Choose ] 7 nucleus contains [ Choose ] w Question 12 7.5 pts a) A patient receives 3.0 mL of a solution containing technetium-99m for a breast image. If the activity of the technetium-99m is 9.5 mCi/mL, the dose received by the patient is ? (please include the unit after the number : e.g. 3 “space” rem b) The atomic size as we go across a period and ionization energy as we down a group. (use lower case only) c) A sample of