Domanda del libro di testo
For chlorine, identify the group number, give the number of electrons in each occupied shell, and write its valence-shell configuration.
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Ch.2 Atoms and the Periodic Table
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187
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TOC.tableOfContents
- Ch.1 Matter and Measurements27
- Ch.2 Atoms and the Periodic Table20
- Ch.3 Ionic Compounds8
- Ch.4 Molecular Compounds23
- Ch.5 Classification & Balancing of Chemical Reactions12
- Ch.6 Chemical Reactions: Mole and Mass Relationships28
- Ch.7 Chemical Reactions: Energy, Rate and Equilibrium64
- Ch.8 Gases, Liquids and Solids24
- Ch.9 Solutions52
- Ch.10 Acids and Bases25
- Ch.11 Nuclear Chemistry22
- Ch.12 Introduction to Organic Chemistry: Alkanes57
- Ch.13 Alkenes, Alkynes, and Aromatic Compounds47
- Ch.14 Some Compounds with Oxygen, Sulfur, or a Halogen50
- Ch.15 Aldehydes and Ketones45
- Ch.16 Amines42
- Ch.17 Carboxylic Acids and Their Derivatives57
- Ch.18 Amino Acids and Proteins82
- Ch.19 Enzymes and Vitamins63
- Ch.20 Carbohydrates44
- Ch.21 The Generation of Biochemical Energy65
- Ch.22 Carbohydrate Metabolism45
- Ch.23 Lipids42
- Ch.24 Lipid Metabolism33
- Ch.25 Protein and Amino Acid Metabolism24
- Ch.26 Nucleic Acids and Protein Synthesis45
McMurry8th EditionFundamentals of General, Organic, and Biological ChemistryISBN: 9780134015187Non è quello che usi tu?Cambia libro di testo
Capitolo 2, Problema 5
Locate aluminum in the periodic table and give its group number and period number.
Guida verificata passo dopo passo1
Locate aluminum (Al) on the periodic table. Aluminum has the atomic number 13, which helps you find its position.
Identify the group number: Groups in the periodic table are the vertical columns. Aluminum is in Group 13 (or Group IIIA in older notation).
Identify the period number: Periods in the periodic table are the horizontal rows. Aluminum is in Period 3.
Understand the significance: The group number indicates the number of valence electrons in aluminum (3 valence electrons), and the period number indicates the number of electron shells (3 shells).
Summarize: Aluminum is located in Group 13 and Period 3 of the periodic table.
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Periodic Table
The periodic table is a systematic arrangement of chemical elements, organized by increasing atomic number. Elements are grouped into rows called periods and columns known as groups, which reflect their similar properties. Understanding the layout of the periodic table is essential for identifying the characteristics of elements, including their reactivity and bonding behavior.
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Percorso guidato
02:40
Periodic Table: Classifications
Group Number
The group number in the periodic table indicates the number of valence electrons in the outer shell of an element. Elements within the same group exhibit similar chemical properties due to this shared electron configuration. For example, aluminum is located in Group 13, which signifies it has three valence electrons, influencing its reactivity and bonding patterns.
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03:13Calculate Oxidation Numbers
Period Number
The period number represents the horizontal row in which an element is found on the periodic table, corresponding to the highest energy level of electrons in an atom. As you move across a period from left to right, the atomic number increases, and elements typically transition from metals to nonmetals. Aluminum is located in Period 3, indicating it has three electron shells.
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02:42Calculate Oxidation Numbers
Pratica correlata
Domanda del libro di testo
How many electrons are present in an atom in which the first and second shells and the 3s subshell are filled? Name the element.
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Domanda del libro di testo
An element has completely filled n = 1 and n = 2 shells and has six electrons in the n = 3 shell. Identify the element and its major group (i.e., main group, transition, etc.). Is it a metal or a nonmetal? Identify the orbital in which the last electron is found.
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