Interpretation: The “stair-step” line on the periodic table needs to be explained.
Concept introduction: A table in chemistry, where all elements are arranged by increasing
Answer to Problem 3RQ
The stair-step line indicates the position of metals, non-metals and metalloids in the Periodic Table.
Explanation of Solution
The periodic table is a very useful way to arrange elements. In a periodic table, the border line between the metals and non-metals are defined as “stair-step” line. Elements that are on the right side of stairs, called non-metals and elements that are on right side of stairs, called metals. Elements along the stair-step line are known as metalloids.
In a periodic table, stair-step line separates metals from non-metals.
Chapter 3 Solutions
World of Chemistry, 3rd edition
- Classification of boranes.arrow_forwardWhat is the pH of a solution made by adding 10-2 M sodium benzoate (C6H5COONa) to pure water, taking into account nonideal solute behavior? Benzoate is the conjugate base of benzoic acid (Ka = 6.25×10-5), a common preservative added to food and beverages.arrow_forwardShow work. don't give Ai generated solutionarrow_forward
- Briefly explain the existence of Nb-Nb bond in the alpha-NbI4 compound.arrow_forwardIn the case of isopilianions, briefly state:- why polymeric species with a defined MW are formed.- why the extent of polymerization is different depending on the metal.- why these polyhedra with such special structures are formed.arrow_forwardA carboxylic acid reacts with water to form a carboxylate ion and H,O+. Complete the reaction. reaction: (CH),CHCH2COOH + H2O (CH), CHCH, COO¯ + H₂O+ Write the IUPAC name of the carboxylate ion formed in the reaction. IUPAC name: BIU X2 SPECIAL GREEK ALPHABET ~ Iarrow_forward
- Show work. Don't give Ai generated solutionarrow_forwardA solution contains 10-3 M (NH4)2CO3 plus 10-3 M CaCO3. (NH4+: pKa 9.26) a) Follow the four steps and list the species and equations that would have to be solved to determine the equilibrium solution composition. (15 pts) b) Prepare a log C-pH diagram for the solution. Use a full sheet of graph paper, and show the ranges 1≤ pH < 13 and -10≤ log C≤ -1. (10 pts) c) Use the graphical approach for the solution pH. What is the concentration of all species? (15 pts)arrow_forwardKeggin structure.arrow_forward
- Given: N2(g) + 3H2(g)2NH3(g) AG° = 53.8 kJ at 700K. Calculate AG for the above reaction at 700K if the reaction mixture consists of 20.0 atm of N2(g), 30.0 atm of H2(g), and 0.500 atm of NH3(g). A) -26.9 kJ B) 31.1 kJ C) -15.6 kJ D) 26.9 kJ E) -25.5 kJarrow_forwardExplain the structure of the phosphomolybdate anion [PMo12O40]3-.arrow_forwardg. NaI, H3PO4 h. 1. BH3/THF 2. H₂O2, OH i. HC1 j. Brarrow_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