Interpretation: The number of electrons, protons, and neutrons needs to be determined in an atom of lead. The molar mass of lead is given 206.
Concept Introduction: In an atom, the number of protons is equal to the number of electrons. This is the
Explanation of Solution
The given element is lead-206. This is the atomic mass of the lead. Now, atomic mass is related to the number of protons and neutrons as follows:
Also, the atomic number is equal to the number of protons and the number of electrons. Here, the atomic number of lead is 82; thus, the number of protons and the number of electrons in lead is equal to 82.
Use the number of protons and atomic mass to calculate the number of neutrons as follows:
Substitute the values,
Thus, the number of neutrons in lead is 124.
Therefore, in lead-206, the number of protons, electrons, and neutrons is 82, 82, and 124 respectively.
Chapter 14 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill EducationPrinciples of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
- Organic ChemistryChemistryISBN:9780078021558Author:Janice Gorzynski Smith Dr.Publisher:McGraw-Hill EducationChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningElementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY