Domanda del libro di testo
Determine the number of valence electrons in each element. a. Cl b. In c. C d. As
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Ch.9 - Periodic Properties of the Elements
Tro6th EditionChemistry: A Molecular ApproachISBN: 9780137832217
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TOC.tableOfContents
- Ch.1 - Matter, Measurement & Problem Solving118
- Ch.2 - Atoms & Elements106
- Ch.3 - Molecules and Compounds131
- Ch.4 - Chemical Reactions and Chemical Quantities56
- Ch.5 - Introduction to Solutions and Aqueous Solutions82
- Ch.6 - Gases114
- Ch.7 - Thermochemistry96
- Ch.8 - The Quantum-Mechanical Model of the Atom60
- Ch.9 - Periodic Properties of the Elements90
- Ch.10 - Chemical Bonding I: The Lewis Model89
- Ch.11 - Chemical Bonding II: Molecular Shapes, VSEPR & MO Theory85
- Ch.12 - Liquids, Solids & Intermolecular Forces51
- Ch.13 - Solids & Modern Materials47
- Ch.14 - Solutions90
- Ch.15 - Chemical Kinetics115
- Ch.16 - Chemical Equilibrium68
- Ch.17 - Acids and Bases136
- Ch.18 - Aqueous Ionic Equilibrium153
- Ch.19 - Free Energy & Thermodynamics93
- Ch.20 - Electrochemistry106
- Ch.21 - Radioactivity & Nuclear Chemistry74
- Ch.22 - Organic Chemistry140
Tro6th EditionChemistry: A Molecular ApproachISBN: 9780137832217Non è quello che usi tu?Cambia libro di testo
Capitolo 9, Problema 51b
Determine the number of valence electrons in an atom of each element. b. Sr
Guida verificata passo dopo passo1
Step 1: Identify the element on the periodic table. Strontium (Sr) is in the second group (IIA) of the periodic table.
Step 2: The group number of an element in the periodic table can be used to determine the number of valence electrons. For elements in group IIA, they have 2 valence electrons.
Step 3: Therefore, an atom of Strontium (Sr) has 2 valence electrons.
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Valence Electrons
Valence electrons are the electrons located in the outermost shell of an atom. They play a crucial role in chemical bonding and reactions, as they are the electrons that can be gained, lost, or shared when atoms interact. The number of valence electrons can often be determined by an element's position in the periodic table.
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02:12
Transition Metals Valence Electrons
Periodic Table
The periodic table organizes elements based on their atomic number and electron configuration. Elements in the same group (column) typically have the same number of valence electrons, which influences their chemical properties. For example, alkaline earth metals like strontium (Sr) are found in Group 2 and have two valence electrons.
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02:40Periodic Table Classifications
Strontium (Sr)
Strontium is a chemical element with the symbol Sr and atomic number 38. It is classified as an alkaline earth metal, which means it has two valence electrons in its outermost shell. This characteristic contributes to its reactivity and the types of compounds it can form.
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01:57Base Properties
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Name an element in the third period (row) of the periodic table with the following: d. two valence electrons
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