Oxidation Number Rules

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What is the oxidation number of hydrogen in LiH?

+2

-1 (correct)

+1

0

What is the sum of the oxidation numbers of all atoms in a compound?

The molecular mass of the compound

The charge on the ion

The number of atoms in the compound

Zero (correct)

What is the oxidation number of fluorine in its compounds?

+1

+2

0

-1 (correct)

What is the oxidation number of oxygen in a compound?

Variable depending on the compound Signup and view all the answers

What is the characteristic of the oxidation number of transition elements?

Display several positive oxidation states Signup and view all the answers

What is the purpose of the rules for assigning oxidation numbers?

To determine the oxidation number of an element in a compound Signup and view all the answers

What is the result of an increase in the oxidation number of an element in a given substance?

Oxidation Signup and view all the answers

What is the role of an oxidising agent in a redox reaction?

To increase the oxidation number of an element Signup and view all the answers

What is the oxidation number of an element in a compound presented according to the notation given by Alfred Stock?

Expressed as a Roman numeral in parentheses Signup and view all the answers

What is the term for a reaction that involves a change in oxidation number of the interacting species?

Redox reaction Signup and view all the answers

What is the result of a decrease in the oxidation number of an element in a given substance?

Reduction Signup and view all the answers

What is the term for a reagent that can lower the oxidation number of an element in a given substance?

Reducing agent Signup and view all the answers

What is the average oxidation number of sulphurs in the S 4O62– species?

2.5 Signup and view all the answers

What is the conclusion about fractional oxidation state?

It should be taken with care and the reality is revealed by the structures only. Signup and view all the answers

What is the oxidation state of the sulphur atoms in the extremes of the S 4O6 species?

+5 Signup and view all the answers

What is the oxidation number of the oxygen atom in the O2+ species?

+½ Signup and view all the answers

What is the first step in the oxidation number method for writing equations for oxidation-reduction reactions?

Write the correct formula for each reactant and product. Signup and view all the answers

What is the characteristic of the oxidation states of the metal atoms in the compounds Fe3O4, Mn 3O4, and Pb3O4?

They are in a combination of whole numbers and fraction oxidation states. Signup and view all the answers