Chemistry Atoms First2e
2nd Edition
ISBN: 9781947172647
Author: OpenStax
Publisher: OpenStax College
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Textbook Question
Chapter 9, Problem 100E
Use principles of atomic structure to answer each of the following:(4)
(a) The radius of the Ca atom is 197 pm; the radius of the Ca2+ ion is 99 pm. Account for the difference.
(b) The lattice energy of CaO(s ) is -3460 kJ/ mol; the lattice energy of K2O is -2240 kJ/mol. Account for the difference.
(c) Given these ionization values, explain the difference between Ca and K with regard to their first and second ionization energies.
(d) The first ionization energy of Mg is 738 kJ/mol and that of Al is 578 kj/mol. Account for this difference.
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Check out a sample textbook solutionStudents have asked these similar questions
Use principles of atomic structure to answer each of the following:
(1]
(a) The radius of the Ca atom is 197 pm; the radius of the Ca2* ion is 99 pm. Account for the difference.
(b) The lattice energy of CaO(s) is –3460 kJ/mol; the lattice energy of K20 is –2240 kJ/mol. Account for the
difference.
(c) Given these ionization values, explain the difference between Ca and K with regard to their first and second
ionization energies.
Element First lonization Energy (kJ/mol)
Second lonization Energy (kJ/mol)
K
419
3050
Ca
590
1140
(d) The first ionization energy of Mg is 738 kJ/mol and that of Al is 578 kJ/mol. Account for this difference.
Each of the chemically active Period 2 elements forms stable compounds in which it has bonds to fluorine.
(a) What are the names and formulas of these compounds?
(b) Does ∆EN increase or decrease left to right across the period?
(c) Does percent ionic character increase or decrease left to right?
(d) Draw Lewis structures for these compounds
One of the following pictures(Figure 1) represents NaCl and one represents MgO.
Which is which?
(a) is NaCl and (b) is MgO
(b) is NaCl and (a) is MgO
Which has the larger lattice energy?
NaCl
MgO
Chapter 9 Solutions
Chemistry Atoms First2e
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