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Introductory Chemistry For Today

8th Edition

ISBN:9781285644561

Author:Seager

Publisher:Seager

Chapter4: Forces Between Particles

Section: Chapter Questions

Problem 4.16E

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Which of the following is true about an individual atom? Explain. a. An individual atom should be considered to be a solid. b. An individual atom should be considered to be a liquid. c. An individual atom should be considered to be a gas. d. The state of the atom depends on which element it is. e. An individual atom cannot be considered to be a solid, liquid, or gas. Justify your choice, and for choices you did not pick, explain what is wrong with them.
7.21 Theoretical models for the structure of atomic nuclei predict the existence of superheavy elements that have not yet been discovered and suggest that such elements might be fairly stable if they could be produced. So researchers are currently trying to synthesize these superheavy elements to test these theories. Element 117 has been synthesized and named Tennessine (Ts). What would the Lewis dot symbol be for this new element?
What are bus? How are ions formed from atoms? Do isolated atoms form ions spontaneously? To what do the termscationandanionrefer? In terms of subatomic particles, how is an ion related to the atom from which it is formed? Does the nucleus of an atom change when the atom is converted into an ion? How can the periodic table be used to predict what ion an element’s atoms will form?
Why do most monatomic cations of the main-group elements have a charge equal to the group number? Why do most monatomic anions of these elements have a charge equal to the group number minus eight?
Name each of the following binary compounds, using the periodic table to determine whether the compound is likely to be ionic (containing a metal or a nonmetal) or nonionic (containing only nonmetals). RaCl2d.Na3P SeCl2e.MnF2 PCl3f.ZnO
What are some of the physical properties that distinguish the metallic element from the nonmetals? Are these properties absolute, or do some nonmetallic elements exhibit some metallic properties (and vice versa)?
P 00 R Consider an ionic compound, MX, composed of generic metal M and generic, gaseous halogen X. • The enthalpy of formation of MX is AH; = -477 kJ/mol. • The enthalpy of sublimation of M is AHsub = 157 kJ/mol. • The ionization energy of M is IE = 435 kJ/mol. • The electron affinity of X is AHEA = -303 kJ/mol. (Refer to the hint). • The bond energy of X, is BE = 165 kJ/mol. Determine the lattice energy of MX. AHjattice kJ/mol MacBook Pro > 巴 %23 2$ 6 96. 7. 4. 5. 3. H. K.
Consider an ionic compound, MX, composed of generic metal M and generic, gaseous halogen X. • The enthalpy of formation of MX is AH; = -513 kJ/mol. • The enthalpy of sublimation of M is AHsub = 123 kJ/mol. • The ionization energy of M is IE = 465 kJ/mol. • The electron affinity of X is AHEA = -325 kJ/mol. (Refer to the hint). • The bond energy of X, is BE = 187 kJ/mol. Determine the lattice energy of MX. AHjattice -795.5 kJ/mol Incorrect
Element "X" reacts with element "Y" to form an ionic compound containing X* and Y2- ions. Write a possible formula for the compound and suggest to which "Group" in the Periodic Table, the elements X and Y may belong to?
What element has 10 electrons when it forms an anion with a 2−charge? The elemental symbol of this element is-
Consider an ionic compound, MX, composed of generic metal M and generic, gaseous halogen X. • The enthalpy of formation of MX is AH; = -517 kJ/mol. • The enthalpy of sublimation of M is AHub 141 kJ/mol. • The ionization energy of M is IE = 449 kJ/mol. • The electron affinity of X is AHEA = -323 kJ/mol. (Refer to the hint). • The bond energy of X, is BE = 217 kJ/mol. Determine the lattice energy of MX. -33 AHjattice kJ/mol Incorrect
Consider an ionic compound, MX, composed of generic metal M and generic, gaseous halogen X. • The enthalpy of formation of MX is AH; -517 kJ/mol. • The enthalpy of sublimation of M is AH sub = 141 kJ/mol. • The ionization energy of M is IE = 449 kJ/mol. • The electron affinity of X is AHEA = -323 kJ/mol. (Refer to the hint). • The bond energy of X, is BE = 217 kJ/mol. Determine the lattice energy of MX. AHjattice kJ/mol

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