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Oxidation state: Quiz


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Question 1: Oxidation itself was first studied by ________ who then held the belief that oxidation was literally the results of reactions of the elements with oxygen and that the common bond in any salt was based on oxygen.
Adam SmithAntoine LavoisierIsaac NewtonJean le Rond d'Alembert

Question 2: For purposes of computing oxidation states, electrons in a bond between atoms of different elements belong to the most ________ atom; electrons in a bond between atoms of the same element are split equally, and electrons in a lone pair belong only to the atom with the lone pair.
ElectronegativityPeriodic tableNoble gasHalogen

Question 3: Here is the definition of the oxidation state listed by ________:[1]
IUPAC nomenclatureInternational Union of Pure and Applied ChemistryCarbonPotassium

Question 4: "Oxidation state"PDF (3.82 KiB) from the ________ Gold Book
International Union of Pure and Applied ChemistryPotassiumIUPAC nomenclatureCarbon

Question 5: ________ has an oxidation state of −1 when bonded to any other element, since it has the highest electronegativity of all reactive elements.

Question 6: The algebraic sum of oxidation states of all atoms in a neutral ________ must be zero, while in ions the algebraic sum of the oxidation states of the constituent atoms must be equal to the charge on the ion.

Question 7: In chemistry, the oxidation state is an indicator of the degree of oxidation of an ________ in a chemical compound.

Question 8: ________ has an oxidation state of +1 except when bonded to more electropositive elements such as sodium, aluminium, and boron, as in NaH, NaBH4, LiAlH4, where each H has an oxidation state of -1.

Question 9: ________ other than fluorine have an oxidation state of −1 except when they are bonded to oxygen, nitrogen or another (more electronegative) halogen.
Noble gasMetalNonmetalHalogen

Question 10: ________ typically has an oxidation state of −2, though there are exceptions that are listed in the next section.


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