   Chapter 25, Problem 22PS

Chapter
Section
Textbook Problem

Complete the following nuclear equations. Write the mass number, atomic number, and symbol for the remaining particle. (a) 4 9 Be+?   →   3 6 Li   +   2 4 He   (b) ? +  0 1 n   →   11 24 Na   +   2 4 He   (c) 20 40 Ca + ?   →   19 40 K   +   1 1 H   (d) 9 5 2 4 1 A m + 2 4 H e   →   9 7 2 4 3 B K   +   ?   (e) 9 6 2 4 6 C m + ?   →   4 0 1 n   +   ?   (f) 92 238 U + ?   →   100 249 Fm   +   5 0 1 n?

(a)

Interpretation Introduction

Interpretation:

Symbol, atomic number and mass for the unknown particle of the given nuclear reaction have to be identified.

Concept Introduction:

Balancing nuclear reaction equation: The balanced nuclear reaction should conserve both mass number and atomic number.

• The sum of the mass numbers of the reactants should be equal to the sum of mass numbers of the products in the reaction.
• The sum of atomic numbers (or the atomic charge) of the reactants should be equal to the sum of atomic numbers (or the atomic charge) of the products in the reaction.
Explanation

The bombardment of unknown particle with Beryllium-9, produce an Helium nuclei particle andLithium-6. The unknown particle is predicted by the rule that says the atomic and mass number must be equal.

B49e+XZAL36i+H24eCalculateMassNumberA:_9(Be)+A(X)=6(Li)+4(He)A=109A=1C

(b)

Interpretation Introduction

Interpretation:

Symbol, atomic number and mass for the unknown particle of the given nuclear reaction have to be identified.

Concept Introduction:

Balancing nuclear reaction equation: The balanced nuclear reaction should conserve both mass number and atomic number.

• The sum of the mass numbers of the reactants should be equal to the sum of mass numbers of the products in the reaction.
• The sum of atomic numbers (or the atomic charge) of the reactants should be equal to the sum of atomic numbers (or the atomic charge) of the products in the reaction.

(c)

Interpretation Introduction

Interpretation:

Symbol, atomic number and mass for the unknown particle of the given nuclear reaction have to be identified.

Concept Introduction:

Balancing nuclear reaction equation: The balanced nuclear reaction should conserve both mass number and atomic number.

• The sum of the mass numbers of the reactants should be equal to the sum of mass numbers of the products in the reaction.
• The sum of atomic numbers (or the atomic charge) of the reactants should be equal to the sum of atomic numbers (or the atomic charge) of the products in the reaction.

(d)

Interpretation Introduction

Interpretation:

Symbol, atomic number and mass for the unknown particle of the given nuclear reaction have to be identified.

Concept Introduction:

Balancing nuclear reaction equation: The balanced nuclear reaction should conserve both mass number and atomic number.

• The sum of the mass numbers of the reactants should be equal to the sum of mass numbers of the products in the reaction.
• The sum of atomic numbers (or the atomic charge) of the reactants should be equal to the sum of atomic numbers (or the atomic charge) of the products in the reaction.

(e)

Interpretation Introduction

Interpretation:

Symbol, atomic number and mass for the unknown particle of the given nuclear reaction have to be identified.

Concept Introduction:

Balancing nuclear reaction equation: The balanced nuclear reaction should conserve both mass number and atomic number.

• The sum of the mass numbers of the reactants should be equal to the sum of mass numbers of the products in the reaction.
• The sum of atomic numbers (or the atomic charge) of the reactants should be equal to the sum of atomic numbers (or the atomic charge) of the products in the reaction.

(f)

Interpretation Introduction

Interpretation:

Symbol, atomic number and mass for the unknown particle of the given nuclear reaction have to be identified.

Concept Introduction:

Balancing nuclear reaction equation: The balanced nuclear reaction should conserve both mass number and atomic number.

• The sum of the mass numbers of the reactants should be equal to the sum of mass numbers of the products in the reaction.
• The sum of atomic numbers (or the atomic charge) of the reactants should be equal to the sum of atomic numbers (or the atomic charge) of the products in the reaction.

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