Radioactive isotopes of elements can be used in medicine to diagnose and treat disease. Which statement describes how a stable isotope is different from a radioactive isotope of that element? A OA radioactive isotope has a stable mucleus containing extra protons.
BOA radioactive isotope has a stable nucleus that absorbs smaller particles
COA radioactive isotope has an unstable meleus that emits smaller particles
DO A radioactive isotope has an unstable nucleus that becomes larger over time

What does x represent in the formula for the compound xcl4?

The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for cl– is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.

In an exothermic reaction the bonding energy of the product is: less than the reactants same as the reactants greater than the reactants dependent upon the presence of a catalyst