
Concept explainers
(a)
Interpretation:
Total numbers of valence electrons of all the atoms needs to be determined in the compound Potassium bromide (KBr).
Concept introduction:
Valence electrons in a molecule, is the sum of all the outer most orbital electrons of each atom present in it. In the periodic table, depending upon the number of valence electrons, elements are placed in specific groups.

Answer to Problem 6E
8 valence electrons.
Explanation of Solution
Potassium bromide consists of potassium and bromine atom.
Electronic configuration of K atom is
Thus, the valence orbital is 4s and the number of valence electron is
Similarly, electronic configuration of Br atom is
Thus, the valence orbital is 4s and 4p and the number of valence electrons are 7.
Therefore, total number of valence electron in KBr molecule =
(b)
Interpretation:
Total number of valence electrons of all the atoms need to be determined in the compound Calcium Oxide (CaO).
Concept introduction:
Valence electrons in a molecule, is the sum of all the outer most orbital electrons of each atom present in it. In the periodic table, depending upon the number of valence electrons, elements are placed in specific groups.

Answer to Problem 6E
8 valence electrons.
Explanation of Solution
Electronic configuration of Ca atom is
Electronic configuration of O atom is
Therefore total number of valence electron in CaO molecule =
(c)
Interpretation:
Total numbers of valence electrons of all the atoms needs to be determined in the compound Lithium oxide (Li2O).
Concept introduction:
Valence electrons in a molecule, is the sum of all the outer most orbital electrons of each atom present in it. In the periodic table, depending upon the number of valence electrons, elements are placed in specific groups.

Answer to Problem 6E
8 valence electrons.
Explanation of Solution
Lithium oxide consists of Lithium and Oxygen atoms.
Electronic configuration of Li atom:
Electronic configuration of O atom:
Therefore, total number of valence electron in Li2O molecule
(d)
Interpretation:
Total numbers of valence electrons of all the atoms needs to be determined in the compound Calcium chloride (CaCl2).
Concept introduction:
Valence electrons in a molecule, is the sum of all the outer most orbital electrons of each atom present in it. In the periodic table, depending upon the number of valence electrons, elements are placed in specific groups.

Answer to Problem 6E
16 valence electrons.
Explanation of Solution
Calcium chloride is consists of Calcium and Chlorine atom.
Electronic configuration of Ca atom:
Electronic configuration of Cl atom:
Therefore, total number of valence electron in CaCl2 is
(e)
Interpretation:
Total numbers of valence electrons of all the atoms needs to be determined in the compound Aluminum chloride (AlCl3).
Concept introduction:
Valence electrons in a molecule, is the sum of all the outer most orbital electrons of each atom present in it. In the periodic table, depending upon the number of valence electrons, elements are placed in specific groups.

Answer to Problem 6E
24 valence electrons.
Explanation of Solution
Aluminum chloride is consists of Aluminum and chlorine atom.
Electronic configuration of Al atom:
Electronic configuration of Cl atom:
Therefore, total number of valence electron in AlCl3 is
Chapter U1 Solutions
Living By Chemistry: First Edition Textbook
Additional Science Textbook Solutions
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
Microbiology: An Introduction
Anatomy & Physiology (6th Edition)
Cosmic Perspective Fundamentals
Organic Chemistry (8th Edition)
Campbell Essential Biology with Physiology (5th Edition)
- Lab Data The distance entered is out of the expected range. Check your calculations and conversion factors. Verify your distance. Will the gas cloud be closer to the cotton ball with HCI or NH3? Did you report your data to the correct number of significant figures? - X Experimental Set-up HCI-NH3 NH3-HCI Longer Tube Time elapsed (min) 5 (exact) 5 (exact) Distance between cotton balls (cm) 24.30 24.40 Distance to cloud (cm) 9.70 14.16 Distance traveled by HCI (cm) 9.70 9.80 Distance traveled by NH3 (cm) 14.60 14.50 Diffusion rate of HCI (cm/hr) 116 118 Diffusion rate of NH3 (cm/hr) 175.2 175.2 How to measure distance and calculate ratearrow_forwardFor the titration of a divalent metal ion (M2+) with EDTA, the stoichiometry of the reaction is typically: 1:1 (one mole of EDTA per mole of metal ion) 2:1 (two moles of EDTA per mole of metal ion) 1:2 (one mole of EDTA per two moles of metal ion) None of the abovearrow_forwardPlease help me solve this reaction.arrow_forward
- Indicate the products obtained by mixing 2,2-dimethylpropanal with acetaldehyde and sodium ethoxide in ethanol.arrow_forwardSynthesize 2-Ethyl-3-methyloxirane from dimethyl(propyl)sulfonium iodide using the necessary organic or inorganic reagents. Draw the structures of the compounds.arrow_forwardSynthesize 2-Hydroxy-2-phenylacetonitrile from phenylmethanol using the necessary organic or inorganic reagents. Draw the structures of the compounds.arrow_forward
- Synthesize N-Methylcyclohexylamine from cyclohexanol using the necessary organic or inorganic reagents. Draw the structures of the compounds.arrow_forwardSynthesize N-Methylcyclohexylamine from cyclohexanol using the necessary organic or inorganic reagents. Draw the structures of the compounds.arrow_forwardIf possible, please provide the formula of the compound 3,3-dimethylbut-2-enal.arrow_forward
- Synthesize 1,4-dibromobenzene from acetanilide (N-phenylacetamide) using the necessary organic or inorganic reagents. Draw the structures of the compounds.arrow_forwardIndicate the products obtained by mixing (3-oxo-3-phenylpropyl)triphenylphosphonium bromide with sodium hydride.arrow_forwardWe mix N-ethyl-2-hexanamine with excess methyl iodide and followed by heating with aqueous Ag2O. Indicate the major products obtained.arrow_forward
- 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





