   # Consider the reaction between sodium metal and fluorine (F 2 ) gas to form sodium fluoride. Using oxidation states, how many electrons would each sodium atom lose, and how many electrons would each fluorine atom gain? How many sodium atoms are needed to react with one fluorine molecule? Write a balanced equation for this reaction. ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243

#### Solutions

Chapter
Section ### Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 6, Problem 87E
Textbook Problem
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## Consider the reaction between sodium metal and fluorine (F2) gas to form sodium fluoride. Using oxidation states, how many electrons would each sodium atom lose, and how many electrons would each fluorine atom gain? How many sodium atoms are needed to react with one fluorine molecule? Write a balanced equation for this reaction.

Interpretation Introduction

Interpretation: The number of electrons that sodium atom loses and number of electrons fluorine gains with the number of sodium atom required to react with one fluorine molecule has to be determined. The balanced equation of sodium and fluorine has to be given

Concept Introduction:

Oxidation: Oxidation can be defined as the process by which a molecule, atom or ion loses its electron in chemical reaction.

Reduction: Reduction can be defined as the process by which a molecule, atom or ion gains electrons by one of atoms in a chemical reaction.

Oxidation number: Oxidation number is the number that tells about the number of electrons that were lost and number of electrons that were gained in chemical reaction.

### Explanation of Solution

Explanation

To find out the number of atoms that sodium loses and fluorine gains.

The chemical reaction of sodium and fluorine can be given by,

2Na(s)+F2(g)2NaF(s)

From the equation, it can be seen sodium undergoes oxidation and fluorine undergoes reduction,

Oxidation, 2Na2e-+2Na+

Reduction, F2+2e-2F-

In the above reaction, the oxidation state of sodium increases from 0 to +1 and the oxidation state of fluorine decreases from 0 to -2.

Therefore, sodium undergoes oxidation by losing one electron and each atom of fluorine undergoes reduction by gaining one electron.

Sodium undergoes oxidation and fluorine undergoes reduction. The oxidation state of sodium increases from 0 to +1 and the oxidation state of fluorine decreases from 0 to -2. Each atom of sodium will lose one electron and each atom of fluorine will gain one electron.

To determine the number of sodium and fluorine atoms required for the reaction

The chemical reaction of sodium and fluorine can be given by,

Na(s)+F2(g)NaF(s)

Two atoms of sodium are required to reacts with one fluorine thus equalizing the electron gain with electron lost

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