1. MnO₂ is an example of what type of bond? a covalent
b ionic
c polyatomic ion

2. Cl is an example of a cation, anion, or polyatomic ion

a polyatomic ion
b anion
c cation

The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.