Domanda del libro di testo
(c) An atom has the electron configuration 1s22s22p63s23p2. How many valence electrons does the atom have?
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Ch.8 - Basic Concepts of Chemical Bonding
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement146
- Ch.2 - Atoms, Molecules, and Ions200
- Ch.3 - Chemical Reactions and Reaction Stoichiometry176
- Ch.4 - Reactions in Aqueous Solution155
- Ch.5 - Thermochemistry126
- Ch.6 - Electronic Structure of Atoms131
- Ch.7 - Periodic Properties of the Elements126
- Ch.8 - Basic Concepts of Chemical Bonding123
- Ch.9 - Molecular Geometry and Bonding Theories143
- Ch.10 - Gases147
- Ch.11 - Liquids and Intermolecular Forces91
- Ch.12 - Solids and Modern Materials122
- Ch.13 - Properties of Solutions126
- Ch.14 - Chemical Kinetics174
- Ch.15 - Chemical Equilibrium101
- Ch.16 - Acid-Base Equilibria139
- Ch.17 - Additional Aspects of Aqueous Equilibria146
- Ch.18 - Chemistry of the Environment72
- Ch.19 - Chemical Thermodynamics129
- Ch.20 - Electrochemistry142
- Ch.21 - Nuclear Chemistry101
- Ch.22 - Chemistry of the Nonmetals68
- Ch.23 - Transition Metals and Coordination Chemistry66
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry10
Brown15th EditionChemistry: The Central ScienceISBN: 9780137542970Non è quello che usi tu?Cambia libro di testo
Capitolo 8, Problema 11b
(b) How many valence electrons does a nitrogen atom possess?
Guida verificata passo dopo passo1
insert step 1> Determine the atomic number of nitrogen from the periodic table.
insert step 2> Recognize that the atomic number of nitrogen is 7, which means it has 7 electrons in total.
insert step 3> Understand that the electron configuration of nitrogen is 1s^2 2s^2 2p^3.
insert step 4> Identify the valence electrons, which are the electrons in the outermost shell. For nitrogen, these are the electrons in the 2s and 2p orbitals.
insert step 5> Count the valence electrons: 2 electrons from the 2s orbital and 3 electrons from the 2p orbital, totaling 5 valence electrons.
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Valence Electrons
Valence electrons are the outermost electrons of an atom and are crucial for determining how an atom interacts with others. They are involved in forming chemical bonds and influence the chemical properties of an element. 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 helps predict their chemical behavior. For nitrogen, which is in group 15, this organization aids in identifying its valence electrons.
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02:40Periodic Table Classifications
Nitrogen Atom
A nitrogen atom has an atomic number of 7, meaning it has 7 protons and, in a neutral state, 7 electrons. The electron configuration of nitrogen is 1s² 2s² 2p³, indicating that it has 5 valence electrons in the second shell. Understanding the structure of nitrogen is essential for determining its reactivity and bonding capabilities.
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01:30Nitrogen Family Reactions
Pratica correlata
Domanda del libro di testo
The molecule shown here is styrene, C8H8, a benzene derivative that is used to make a number of polymers, including polystyrene. The shorthand notation for the benzene ring (described in Section 8.6) is used. Three of the carbon–carbon bonds are numbered in the structure.
a. Which of the three bonds is the strongest?
b. Which of the three bonds is the longest?
c. Which of the three bonds is best described as halfway between a single and a double bond? [Sections 8.6 and 8.8]
Domanda del libro di testo
(a) True or false: The hydrogen atom is most stable when it has a full octet of electrons.
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Domanda del libro di testo
(a) True or false: An element's number of valence electrons is the same as its atomic number.
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Domanda del libro di testo
Consider the element silicon, Si. (c) Which subshells hold the valence electrons?
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Domanda del libro di testo
Consider the Lewis structure for the polyatomic oxyanion shown here, where X is an element from the third period (Na - Ar). By changing the overall charge, n, from 1- to 2- to 3- we get three different polyatomic ions. For each of these ions (b) determine the formal charge of the central atom, X;
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