Domanda del libro di testo
(a) What is the general relationship between the size of an atom and its first ionization energy?
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Ch.7 - Periodic Properties of the Elements
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232
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TOC.tableOfContents
- Ch.1 - Introduction: Matter, Energy, and Measurement177
- Ch.2 - Atoms, Molecules, and Ions231
- Ch.3 - Chemical Reactions and Reaction Stoichiometry216
- Ch.4 - Reactions in Aqueous Solution189
- Ch.5 - Thermochemistry175
- Ch.6 - Electronic Structure of Atoms168
- Ch.7 - Periodic Properties of the Elements150
- Ch.8 - Basic Concepts of Chemical Bonding177
- Ch.9 - Molecular Geometry and Bonding Theories200
- Ch.10 - Gases179
- Ch.11 - Liquids and Intermolecular Forces113
- Ch.12 - Solids and Modern Materials154
- Ch.13 - Properties of Solutions157
- Ch.14 - Chemical Kinetics199
- Ch.15 - Chemical Equilibrium128
- Ch.16 - Acid-Base Equilibria164
- Ch.17 - Additional Aspects of Aqueous Equilibria163
- Ch.18 - Chemistry of the Environment105
- Ch.19 - Chemical Thermodynamics164
- Ch.20 - Electrochemistry171
- Ch.21 - Nuclear Chemistry122
- Ch.22 - Chemistry of the Nonmetals82
- Ch.23 - Transition Metals and Coordination Chemistry79
- Ch.24 - The Chemistry of Life: Organic and Biological Chemistry16
Brown14th EditionChemistry: The Central ScienceISBN: 9780134414232Non è quello che usi tu?Cambia libro di testo
Capitolo 7, Problema 39
Which element has the highest second ionization energy: Li, K, or Be?
Guida verificata passo dopo passo1
Step 1: Understand the concept of ionization energy. Ionization energy is the energy required to remove an electron from an atom or ion. The second ionization energy refers to the energy required to remove a second electron after the first has already been removed.
Step 2: Consider the atomic structure of the elements. Lithium (Li) has 3 electrons, Potassium (K) has 19 electrons, and Beryllium (Be) has 4 electrons. For Li and K, the second ionization energy involves removing an electron from a full shell, which requires a lot of energy. For Be, the second ionization energy involves removing an electron from an incomplete shell, which requires less energy.
Step 3: Consider the periodic trends. Ionization energy generally increases across a period (from left to right) and decreases down a group (from top to bottom) on the periodic table. Therefore, Be (which is to the right of Li and above K on the periodic table) should have a higher second ionization energy than either Li or K.
Step 4: Consider the electron configuration. The electron configuration of Be is [He]2s^2. After the first ionization, Be^+ has the electron configuration of He, which is a stable noble gas configuration. Removing another electron from this stable configuration requires a lot of energy.
Step 5: Based on these considerations, Be should have the highest second ionization energy among Li, K, and Be.
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Ionization Energy
Ionization energy is the energy required to remove an electron from an atom or ion in its gaseous state. It is a key factor in determining an element's reactivity and is influenced by the atomic structure, including the number of protons and the distance of electrons from the nucleus.
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01:19
Ionization Energy
Second Ionization Energy
Second ionization energy refers to the energy needed to remove a second electron from a singly charged cation. This value is typically higher than the first ionization energy due to increased effective nuclear charge acting on the remaining electrons, making them harder to remove.
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01:19Ionization Energy
Trends in Ionization Energy
Ionization energy generally increases across a period from left to right and decreases down a group in the periodic table. This trend is due to the increasing nuclear charge and decreasing atomic radius across a period, while increased electron shielding and distance from the nucleus down a group reduce ionization energy.
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01:08Ionization Energy Trends
Pratica correlata
Domanda del libro di testo
Identify each statement as true or false:
(a) Ionization energies are always endothermic.
(b) Potassium has a larger first ionization energy than lithium.
(c) The second ionization energy of the sodium atom is larger than the second ionization energy of the magnesium atom.
(d) The third ionization energy is three times the first ionization energy of an atom.
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Domanda del libro di testo
(b) Which element in the periodic table has the largest ionization energy? Which has the smallest?
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Domanda del libro di testo
Write equations that show the processes that describe the
first, second, and third ionization energies of a chlorine
atom. Which process would require the least amount of
energy?
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Domanda del libro di testo
Write equations that show the process for (a) the first two
ionization energies of zinc (b) the fourth ionization
energy of calcium.
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Domanda del libro di testo
In the ionic compounds LiF, NaCl, KBr, and RbI, the measured cation–anion distances are 201 pm (Li–F), 282 pm (Na–Cl), 330 pm (K–Br), and 367 pm (Rb–I), respectively. (c) What estimates of the cation– anion distance would you obtain for these four compounds using neutral atom bonding atomic radii? Are these estimates as accurate as the estimates using ionic radii?
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