OpenStax Chemistry: Atoms First 2e
3.4: Electronic Structure of Atoms (Electron Configurations)
Chemistry: Atoms First 2e
3: Electronic Structure and Periodic Properties of Elements
3.4: Electronic Structure of Atoms (Electron Configurations)
46. Read the labels of several commercial products and identify monatomic ions of at least four
transition elements contained in the products. Write the complete electron configurations of these
cations.
Solution
For example, Fe3+: 1s22s22p63s23p63d5; Cu2+: 1s22s22p63s23p63d9; Ti4+: 1s22s22p63s23p6; Cr3+:
1s22s22p63s23p63d3
47. Read the labels of several commercial products and identify monatomic ions of at least six
main group elements contained in the products. Write the complete electron configurations of
these cations and anions.
Solution
For example, Na+: 1s22s22p6; Ca2+: 1s22s22p63s23p6; Sn2+: 1s22s22p63s23p63d104s24p64d105s2; F–:
1s22s22p6; O2–: 1s22s22p6; Cl–: 1s22s22p63s23p6
48. Using complete subshell notation (not abbreviations, 1s22s22p6, and so forth), predict the
electron configuration of each of the following atoms:
(a) C
(b) P
(c) V
(d) Sb
(e) Sm
Solution
(a) 1s22s22p2; (b) 1s22s22p63s23p3; (c) 1s22s22p63s23p64s23d3; (d)
1s22s22p63s23p63d104s24p64d105s25p3; (e) 1s22s22p63s23p63d104s24p64d105s25p66s24f6
49. Using complete subshell notation (1s22s22p6, and so forth), predict the electron configuration
of each of the following atoms:
(a) N
(b) Si
(c) Fe
(d) Te
(e) Tb
Solution
(a) 1s22 s22p3; (b) 1s22 s22p63s23p2; (c) 1s22 s22p63s23p64s23d6; (d) 1s22
s22p63s23p64s23d104p65s24d105p4; (e) 1s22 s22p63s23p64s23d104p65s24d105p66s24f9
50. Is 1s22s22p6 the symbol for a macroscopic property or a microscopic property of an element?
Explain your answer.
Solution
A microscopic property; it describes the electronic configuration, which is a property of an atom.
51. What additional information do we need to answer the question “Which ion has the electron
configuration 1s22s22p63s23p6”?
Solution
The charge on the ion.
52. Draw the orbital diagram for the valence shell of each of the following atoms:
(a) C
(b) P
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3.4: Electronic Structure of Atoms (Electron Configurations)
Chemistry: Atoms First 2e
3: Electronic Structure and Periodic Properties of Elements
3.4: Electronic Structure of Atoms (Electron Configurations)
46. Read the labels of several commercial products and identify monatomic ions of at least four
transition elements contained in the products. Write the complete electron configurations of these
cations.
Solution
For example, Fe3+: 1s22s22p63s23p63d5; Cu2+: 1s22s22p63s23p63d9; Ti4+: 1s22s22p63s23p6; Cr3+:
1s22s22p63s23p63d3
47. Read the labels of several commercial products and identify monatomic ions of at least six
main group elements contained in the products. Write the complete electron configurations of
these cations and anions.
Solution
For example, Na+: 1s22s22p6; Ca2+: 1s22s22p63s23p6; Sn2+: 1s22s22p63s23p63d104s24p64d105s2; F–:
1s22s22p6; O2–: 1s22s22p6; Cl–: 1s22s22p63s23p6
48. Using complete subshell notation (not abbreviations, 1s22s22p6, and so forth), predict the
electron configuration of each of the following atoms:
(a) C
(b) P
(c) V
(d) Sb
(e) Sm
Solution
(a) 1s22s22p2; (b) 1s22s22p63s23p3; (c) 1s22s22p63s23p64s23d3; (d)
1s22s22p63s23p63d104s24p64d105s25p3; (e) 1s22s22p63s23p63d104s24p64d105s25p66s24f6
49. Using complete subshell notation (1s22s22p6, and so forth), predict the electron configuration
of each of the following atoms:
(a) N
(b) Si
(c) Fe
(d) Te
(e) Tb
Solution
(a) 1s22 s22p3; (b) 1s22 s22p63s23p2; (c) 1s22 s22p63s23p64s23d6; (d) 1s22
s22p63s23p64s23d104p65s24d105p4; (e) 1s22 s22p63s23p64s23d104p65s24d105p66s24f9
50. Is 1s22s22p6 the symbol for a macroscopic property or a microscopic property of an element?
Explain your answer.
Solution
A microscopic property; it describes the electronic configuration, which is a property of an atom.
51. What additional information do we need to answer the question “Which ion has the electron
configuration 1s22s22p63s23p6”?
Solution
The charge on the ion.
52. Draw the orbital diagram for the valence shell of each of the following atoms:
(a) C
(b) P
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