Question 1
Which group of elements are found as diatomic molecules?
◦ halogens
◦ alkali metals
◦ alkaline earth metals
◦ noble gases
Question 2
Both chlorine and bromine can be produced in the laboratory by reacting the halides with manganese(IV) oxide. If the following equation is balanced in an acidic solution, then the MnO
2 is acting as a(n) ________ and the coefficient in front of H
+ is ________.
________ MnO2(s) + ________ Cl-(aq) + ________ H+(aq) → ________ Mn2+(aq) + ________ Cl2(g) + ________ H2O(l)
◦ oxidizing agent, 2
◦ oxidizing agent, 4
◦ oxidizing agent, 3
◦ reducing agent, 3