WorksheetsUnderstanding Oxidation States
Total questions: 10
Worksheet time: 5mins
What is the oxidation state of oxygen in most compounds?
0
-1
-2
+1
What is the oxidation state of hydrogen when bonded to nonmetals?
-1
+1
+2
0
In a neutral compound, what is the sum of the oxidation states of all atoms?
2
0
-1
1
What is the oxidation state of an element in its standard state?
0
-1
+2
+1
How do you determine the oxidation state of an element in a polyatomic ion?
The oxidation state is always zero in polyatomic ions.
Oxidation states can only be determined in ionic compounds.
The oxidation state of an element in a polyatomic ion is determined by balancing the known oxidation states with the overall charge of the ion.
The oxidation state is determined by the number of protons in the nucleus.
What is the oxidation state of chlorine in NaCl?
-2
0
+1
-1
What rule applies to alkali metals in compounds regarding their oxidation state?
+2
0
-1
+1
What is the oxidation state of sulfur in H2SO4?
+2
+4
0
+6
How does the oxidation state change in a redox reaction?
The oxidation state changes only in the presence of a catalyst.
The oxidation state changes due to the transfer of electrons; it increases during oxidation and decreases during reduction.
Oxidation and reduction do not affect the oxidation state.
The oxidation state remains constant throughout the reaction.
What is the oxidation state of nitrogen in NH3?
+1
-1
+3
-3
