Concept explainers
(a)
Interpretation:
Whether oxygen is a metal, non-metal or a metalloid needs to be determined.
Concept introduction:
Oxygen is an element with
Answer to Problem 31A
Oxygen is a non-metal.
Explanation of Solution
Oxygen belongs to group 16 of the periodic table and it is represented by orange color in the periodic table. Non-metals are represented by orange color in the periodic table. Oxygen can accept two electrons to acquire stable configuration. So, oxygen is a non-metal
(b)
Interpretation:
Whether barium is a metal, non-metal or a metalloid needs to be determined.
Concept introduction:
Barium belongs to group II of the periodic table, that is, alkaline earth metals. The atomic number of barium is 56 and represented by blue color in the periodic table. The s-block in the periodic table contains 2 groups, group 1 and group 2.
(b)
Answer to Problem 31A
Barium is a metal.
Explanation of Solution
The two groups belong to s-block are group I and group II. Group I elements are called as alkali metals. Some elements of group I are Lithium, Sodium etc. Group II elements are called as alkaline earth metals. Some examples of group II elements are magnesium, barium etc. As barium belongs to group II of the periodic table, it is a metal.
(c)
Interpretation:
Whether germanium is a metal, non-metal or a metalloid needs to be determined.
Concept introduction:
Germanium is an element of the p-block of the periodic table. Its chemical symbol is ‘Ge’ and it is present in group 14 of the periodic table. In the p-block of the periodic table, along with non-metals, metalloid and noble gases are also present.
(c)
Answer to Problem 31A
Germanium is a metalloid.
Explanation of Solution
Metalloids are those elements which contain properties of both metal and non-metals. They are present in p-block of the periodic table, that is, from group 13 to 17. Germanium is a metalloid present in group 14 of the periodic table and it contains both the properties of metals and non-metals.
(d)
Interpretation:
Whether iron is a metal, non-metal or a metalloid needs to be determined.
Concept introduction:
Iron is an element with atomic number 16. The chemical symbol for iron is ‘Fe’. It belongs to d-block of the period table and it is known as transition element.
(d)
Answer to Problem 31A
Iron is a metal.
Explanation of Solution
The d-block of the periodic table contains
Chapter 6 Solutions
Chemistry: Matter and Change
Additional Science Textbook Solutions
Human Anatomy & Physiology (2nd Edition)
College Physics: A Strategic Approach (3rd Edition)
Brock Biology of Microorganisms (15th Edition)
Chemistry: The Central Science (14th Edition)
Microbiology: An Introduction
Biology: Life on Earth (11th Edition)
- For each of the following reactions: Fill in the missing reactant, reagent, or product (s), indicating stereochemistry where appropriate using dashed and wedged bonds. If the reaction forms a racemic mixture, draw both structures in the box and write the word “racemic”.arrow_forward1) Draw the correct chemical structure (using line-angle drawings / "line structures") from their given IUPAC name: a. hept-3-yne b. 5-bromo-1-fluoro-4-methylpent-2-ynearrow_forward15. How many absorptions are expected in the H-NMR spectra of fee songs? Explain your were a) CH,CH,CCH,CH, O CHUCH CHCHarrow_forward
- Firefly luciferin exhibits three rings. Identify which of the rings are aromatic. Identify which lone pairs are involved in establishing aromaticity. The lone pairs are labeled A-D below.arrow_forwardWhat is the [OH⁻] of a 1.80 M solution of pyridine (C₅H₅N, Kb = 1.70 × 10⁻⁹)?arrow_forwardWhat is the percent ionization in a 0.260 M solution of formic acid (HCOOH) (Ka = 1.78 × 10⁻⁴)?arrow_forward
- Determine the pH of solution of HC3H5O2 By constructing an ICE table writing the equilibrium constant expression, and using this information to determine the pH. The Ka of HC3H5O2 is 1.3 x 10-5arrow_forwardDetermine if the following salt is neutral, acidic or basic. If acidic or basic, write the appropriate equilibrium equation for the acid or base that exists when the salt is dissolved in aqueous solution. If neutral, simply write only NR. Be sure to include the proper phases for all species within the reaction LiNO3arrow_forwardAn unknown weak acid with a concentration of 0.410 M has a pH of 5.600. What is the Ka of the weak acid?arrow_forward
- (racemic) 19.84 Using your reaction roadmaps as a guide, show how to convert 2-oxepanone and ethanol into 1-cyclopentenecarbaldehyde. You must use 2-oxepanone as the source of all carbon atoms in the target molecule. Show all reagents and all molecules synthesized along the way. & + EtOH H 2-Oxepanone 1-Cyclopentenecarbaldehydearrow_forwardR₂ R₁ R₁ a R Rg Nu R₂ Rg R₁ R R₁₂ R3 R R Nu enolate forming R₁ R B-Alkylated carbonyl species or amines Cyclic B-Ketoester R₁₁ HOB R R₁B R R₁₂ B-Hydroxy carbonyl R diester R2 R3 R₁ RB OR R₂ 0 aB-Unsaturated carbonyl NaOR Aldol HOR reaction 1) LDA 2) R-X 3) H₂O/H₂O ketone, aldehyde 1) 2°-amine 2) acid chloride 3) H₂O'/H₂O 0 O R₁ R₁ R R₁ R₁₂ Alkylated a-carbon R₁ H.C R₁ H.C Alkylated methyl ketone acetoacetic ester B-Ketoester ester R₁ HO R₂ R B-Dicarbonyl HO Alkylated carboxylic acid malonic ester Write the reagents required to bring about each reaction next to the arrows shown. Next, record any regiochemistry or stereochemistry considerations relevant to the reaction. You should also record any key aspects of the mechanism, such as forma- tion of an important intermediate, as a helpful reminder. You may want to keep track of all reactions that make carbon-carbon bonds, because these help you build large molecules from smaller fragments. This especially applies to the reactions in…arrow_forwardProvide the reasonable steps to achieve the following synthesis.arrow_forward
ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
ChemistryChemistryISBN:9781259911156Author:Raymond Chang Dr., Jason Overby ProfessorPublisher:McGraw-Hill Education
Principles 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 Education
Chemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage Learning
Elementary Principles of Chemical Processes, Bind...ChemistryISBN:9781118431221Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. BullardPublisher:WILEY