Chemistry by OpenStax (2015-05-04)
1st Edition
ISBN: 9781938168390
Author: Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher: OpenStax
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Textbook Question
Chapter 6, Problem 84E
The ionic radii of the ions
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Students have asked these similar questions
The ionic radii of the ions S2–, Cl–, and K+ are 184, 181, 138 pm respectively. Explain why these ions have different sizes even though they contain the same number of electrons.
3. Of the elements Nd, Al, and Ar, which will readily form(s) +3 ions? Why?
4. The atomic radii of Na and Cl are 190 and 79 pm, respectively, but the distance between sodium
and chlorine in NaCl is 282 pm. Explain this discrepancy.
Consider an ionic compound, MX3, composed of generic metal M and generic gaseous halogen X.
The enthalpy of formation of MX3 is ΔHf∘=−965 kJ/mol.
The enthalpy of sublimation of M is ΔHsub=123 kJ/mol.
The first, second, and third ionization energies of M are IE1=557 kJ?mol, IE2=1751 kJ/mol, and IE3=2731 kJ/mol.
The electron affinity of X is ΔHEA=−339 kJ/mol
The bond energy of X2 is BE=235 kJ/mol.
Determine the lattice energy of MX3.
Chapter 6 Solutions
Chemistry by OpenStax (2015-05-04)
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- Indicate whether or not each of the following pairs of atoms/ions are isoelectronic. a. K+ and Ar b. Al3+ and Cl c. S and Cl d. Na+ and Mg2+arrow_forwardWhich of the following statements about the formation of ions is true? Group 2 (or 2A) elements form +1 charge cations. When an atoms loses electrons to become an ion, its radius decreases. Metals gain electrons to form negative ions. Atoms with a high ionization energy tend to lose electrons easily. Some non-metals can form ions with variable charges.arrow_forwardArrange these ions according to ionic radius. Ca2+, K+, Cl-, S^2-, P^3-arrow_forward
- Consider an ionic compound, MX2, composed of generic metal M and generic, gaseous halogen X. The enthalpy of formation of MX2 is ΔHf∘=−975 kJ/mol. The enthalpy of sublimation of MM is ΔHsub=133 kJ/mol. The first and second ionization energies of MM are IE1=751 and IE2=1412 The electron affinity of X is Δ?EA=−323Kj/mol The bond energy of X2 is BE=203 kJ/mol. Determine the lattice energy of MX2.arrow_forwardplease explain step by steparrow_forwardWhich of the following elements will most likely form ions with a –2 charge? a) Cr b) Sr c) Se d) Narrow_forward
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- Consider an ionic compound, MX, composed of generic metal M and generic, gaseous halogen X. The enthalpy of formation of MX is Δ?∘f=−501 kJ/mol. The enthalpy of sublimation of M is Δ?sub=157kJ/mol. The ionization energy of M is IE=405 kJ/mol. The electron affinity of X is Δ?EA=−339kJ/mol. The bond energy of X2 is BE=193kJ/mol. Determine the lattice energy of MX.arrow_forwardList the following ions in order of increasing radius. (Use the appropriate <, =, or > symbol to separate substances in the list.) Te2−, Br−, Na+, Li+arrow_forwardThe monatomic ions of Groups 1A(1) and 7A(17) are allsingly charged. In what major way do they differ? Why?arrow_forward
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