Chemistry
Chemistry
4th Edition
ISBN: 9780078021527
Author: Julia Burdge
Publisher: McGraw-Hill Education
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Chapter 2, Problem 28QP
Interpretation Introduction

Introduction:

The number of neutrons present in the given isotopes is to be determined.

Concept introduction:

The number of neutrons in an atom is defined as the difference between the mass number and the number of protons..

The atomic number (Z) is the number of protons in the nucleus of each atom of an element.

The mass number (A) is the total number of neutrons and protons present in the nucleus of an atom of an element. The expression for mass number is as follows:

mass number (A) = number of protons (Z) + number of neutrons

The accepted way to denote the atomic number and mass number of an atom of an element (X) is as follows:

ZAX

Here, A is mass number and Z is atomic number.

Expert Solution & Answer
Check Mark

Answer to Problem 28QP

Solution: 119, 27, 33, 9, 72, 78, 23, 24, 13, 17, 47, 56

Explanation of Solution

For 79198Au:

From the periodic table, the atomic number of gold is 79.

Number of neutrons =Mass number (A)Number of protons=19879=119                                

For 2047Ca:

From the periodic table, the atomic number of calcium is 20.

Number of neutrons =Mass number (A)Number of protons=4720=  27                              

For 2760Co:

From the periodic table, the atomic number of cobalt is 27.

Number of neutrons =Mass number (A)Number of protons=6027=  33                              

For 918F:

From the periodic table, the atomic number of fluorine is 9.

Number of neutrons =Mass number (A)Number of protons=189=  9                              

For 53125I:

From the periodic table, the atomic number of iodine is 53.

Number of neutrons =Mass number (A)Number of protons=12553=  72                             

For 53131I:

From the periodic table, the atomic number of iodine is 53.

Number of neutrons =Mass number (A)Number of protons=13153=  78                              

For 1942K:

From the periodic table, the atomic number of potassium is 19.

Number of neutrons =Mass number (A)Number of protons=4219=  23                              

For 1943K:

From the periodic table, the atomic number of potassium is 19.

Number of neutrons =Mass number (A)Number of protons=4319=  24                              

For 1124Na:

From the periodic table, the atomic number of potassium is 19.

Number of neutrons =Mass number (A)Number of protons=2411=  13                              

For 1532P:

From the periodic table, the atomic number of phosphorus is 15.

Number of neutrons =Mass number (A)Number of protons=3215=  17                              

For 3885Sr:

From the periodic table, the atomic number of strontium is 38.

Number of neutrons =Mass number (A)Number of protons=8538=  47                             

For 4399Tc:

From the periodic table, the atomic number of potassium is 19.

Number of neutrons =Mass number (A)Number of protons=9943=  56                              

Conclusion

For 79198Au: Number of neutrons = 119.

For 2047Ca:Number of neutrons = 27.

For 2760Co:Number of neutrons = 33.

For 918F:Number of neutrons = 9.

For 53125I:Number of neutrons = 72.

For 53131I:Number of neutrons = 78.

For 1942K:Number of neutrons = 23.

For 1943K:Number of neutrons = 24.

For 1124Na:Number of neutrons = 13.

For 1532P:Number of neutrons = 17.

For 3885Sr:Number of neutrons = 47.

For 4399Tc:Number of neutrons = 56.

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Chapter 2 Solutions

Chemistry

Ch. 2.3 - Practice ProblemATTEMPT The atomic masses of the...Ch. 2.3 - Practice ProblemBUILD The average atomic mass of...Ch. 2.3 - Practice Problem CONCEPTUALIZE The following...Ch. 2.4 - Which of the following series of elemental symbols...Ch. 2.4 - 2.4.2 Which of the following elements would you...Ch. 2.4 - Practice Problem ATTEMPT Name the following ionic...Ch. 2.4 - Practice Problem BUILD Name the following ionic...Ch. 2.4 - Practice ProblemCONCEPTUALIZE The diagram...Ch. 2.5 - Boron has two naturally occurring isotopes, which...Ch. 2.5 - 2.5.2 The two naturally occurring isotopes of...Ch. 2.5 - Practice Problem ATTEMPT Deduce the formulas of...Ch. 2.5 - Practice ProblemBUILD Deduce the formulas of the...Ch. 2.5 - Practice Problem CONCEPTUALIZE The diagram...Ch. 2.6 - Prob. 1PPACh. 2.6 - Practice ProblemBUILD Name the following species:...Ch. 2.6 - Prob. 1PPCCh. 2.6 - Prob. 1CPCh. 2.6 - Prob. 2CPCh. 2.6 - Prob. 3CPCh. 2.6 - 2.6.4 What is the formula of nickel(II) nitrate...Ch. 2.6 - Prob. 5CPCh. 2.6 - Prob. 6CPCh. 2.7 - Practice ProblemATTEMPT Chloroform was used as an...Ch. 2.7 - Practice ProblemBUILD Write the molecular formula...Ch. 2.7 - Prob. 1PPCCh. 2.7 - Prob. 1CPCh. 2.7 - 2.7.2 What is the name of the compound...Ch. 2.7 - What is the correct formula for the compound...Ch. 2.7 - 2.7.4 What is the empirical formula of the...Ch. 2.8 - Practice Problem ATTEMPT Name the following...Ch. 2.8 - Practice ProblemBUILD Name the following binary...Ch. 2.8 - Practice Problem CONCEPTUALIZE Name the binary...Ch. 2.9 - Practice ProblemATTEMPT Give the molecular formula...Ch. 2.9 - Practice ProblemBUILD Give the molecular formula...Ch. 2.9 - Prob. 1PPCCh. 2.10 - Practice ProblemATTEMPT Determine the formula of...Ch. 2.10 - Practice ProblemBUILD Determine the formula of...Ch. 2.10 - Practice ProblemCONCEPTUALIZE Referring to the...Ch. 2.11 - Practice Problem ATTEMPT Write empirical formulas...Ch. 2.11 - Practice ProblemBUILD For which of the following...Ch. 2.11 - Practice ProblemCONCEPTUALIZE Which of the...Ch. 2 - Prob. 1KSPCh. 2 - Prob. 2KSPCh. 2 - Prob. 3KSPCh. 2 - What is the correct formula for phosphorus...Ch. 2 - What are the hypotheses on which Dalton's atomic...Ch. 2 - State the laws of definite proportions and...Ch. 2 - Prob. 3QPCh. 2 - Prob. 4QPCh. 2 - 2.5 Sulfur reacts with fluorine to produce three...Ch. 2 - 2.6 Both and contain only iron and oxygen. The...Ch. 2 - For the two compounds pictured, evaluate the...Ch. 2 - 2.8 For the two compounds pictured, evaluate the...Ch. 2 - Prob. 9QPCh. 2 - Prob. 10QPCh. 2 - Prob. 11QPCh. 2 - Describe the contributions of the following...Ch. 2 - 2.13 Describe the experimental basis for believing...Ch. 2 - The diameter of a neutral helium atom is about 1 ×...Ch. 2 - Prob. 15QPCh. 2 - Prob. 16QPCh. 2 - Prob. 17QPCh. 2 - Prob. 18QPCh. 2 - Prob. 19QPCh. 2 - 2.20 What is the mass number of an iron atom that...Ch. 2 - Prob. 21QPCh. 2 - 2.22 For each of the following species, determine...Ch. 2 - 2.23 Indicate the number of protons, neutrons, and...Ch. 2 - Prob. 24QPCh. 2 - Prob. 25QPCh. 2 - 2.26 Determine the mass number of (a) a boron atom...Ch. 2 - Prob. 27QPCh. 2 - Prob. 28QPCh. 2 - What is the periodic table, and what is its...Ch. 2 - 2.30 State two differences between a metal and a...Ch. 2 - Prob. 31QPCh. 2 - Give two examples of each of the following: (a)...Ch. 2 - Prob. 33QPCh. 2 - Prob. 34QPCh. 2 - Prob. 35QPCh. 2 - Prob. 36QPCh. 2 - Prob. 37QPCh. 2 - Prob. 38QPCh. 2 - Prob. 39QPCh. 2 - Prob. 40QPCh. 2 - Prob. 41QPCh. 2 - Prob. 42QPCh. 2 - Prob. 43QPCh. 2 - Prob. 44QPCh. 2 - The atomic masses of 204 Pb ( 1 .4 percent ) . 206...Ch. 2 - Prob. 46QPCh. 2 - Prob. 47QPCh. 2 - 2.48 What is the mass in grams of 13.2 amu? Ch. 2 - Prob. 49QPCh. 2 - Prob. 50QPCh. 2 - Prob. 51QPCh. 2 - Prob. 52QPCh. 2 - Prob. 53QPCh. 2 - Prob. 54QPCh. 2 - Prob. 55QPCh. 2 - Prob. 56QPCh. 2 - Prob. 57QPCh. 2 - Prob. 58QPCh. 2 - Prob. 59QPCh. 2 - Prob. 60QPCh. 2 - 2.61 Name the following compounds: Ch. 2 - Prob. 62QPCh. 2 - Prob. 63QPCh. 2 - Prob. 64QPCh. 2 - Prob. 65QPCh. 2 - Prob. 66QPCh. 2 - Prob. 67QPCh. 2 - Prob. 68QPCh. 2 - Prob. 69QPCh. 2 - Prob. 70QPCh. 2 - Prob. 71QPCh. 2 - Prob. 72QPCh. 2 - Prob. 73QPCh. 2 - Prob. 74QPCh. 2 - Prob. 75QPCh. 2 - Prob. 76QPCh. 2 - Prob. 77QPCh. 2 - Prob. 78QPCh. 2 - Prob. 79QPCh. 2 - Prob. 80QPCh. 2 - Prob. 81QPCh. 2 - Prob. 82QPCh. 2 - Prob. 83QPCh. 2 - Prob. 84QPCh. 2 - Prob. 85QPCh. 2 - Prob. 86QPCh. 2 - Prob. 87APCh. 2 - Prob. 88APCh. 2 - Prob. 89APCh. 2 - One isotope of a metallic element has mass number...Ch. 2 - Prob. 91APCh. 2 - Prob. 92APCh. 2 - 2.93 What is wrong with or ambiguous about the...Ch. 2 - Prob. 94APCh. 2 - Prob. 95APCh. 2 - Prob. 96APCh. 2 - Prob. 97APCh. 2 - Prob. 98APCh. 2 - Prob. 99APCh. 2 - Prob. 100APCh. 2 - Prob. 101APCh. 2 - Prob. 102APCh. 2 - Prob. 103APCh. 2 - Determine the molecular and empirical formulas of...Ch. 2 - Prob. 105APCh. 2 - Prob. 106APCh. 2 - The Group 1B metals . Cu, Ag, and Au, are called...Ch. 2 - Prob. 108APCh. 2 - Prob. 109APCh. 2 - Prob. 110APCh. 2 - Two elements form a compound that can be...Ch. 2 - Which of the diagrams can be used to illustrate...Ch. 2 - Prob. 113APCh. 2 - Prob. 114APCh. 2 - Prob. 115APCh. 2 - 2.116 Show the locations of (a) alkali metals, (b)...Ch. 2 - Prob. 117APCh. 2 - Prob. 118APCh. 2 - Prob. 119APCh. 2 - 2.120 (a) Describe Rutherford’s experiment and how...Ch. 2 - Prob. 121APCh. 2 - Prob. 122APCh. 2 - Prob. 123APCh. 2 - A cube made of platinum (Pt) has an edge length of...Ch. 2 - Prob. 125APCh. 2 - Prob. 126APCh. 2 - Prob. 1SEPPCh. 2 - Prob. 2SEPPCh. 2 - Prob. 3SEPPCh. 2 - Prob. 4SEPP
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