2025/ 2026 Chemistry Atoms First 2e Notes | OSX ISM Chapter 3-5, Full Study Guide with Solutions

OpenStax Chemistry: Atoms First 2e
3.5: Periodic Variations in Element Properties
Chemistry: Atoms First 2e
3: Electronic Structure and Periodic Properties of Elements
3.5: Periodic Variations in Element Properties
67. Based on their positions in the periodic table, predict which has the smallest atomic radius:
Mg, Sr, Si, Cl, I.
Solution
Cl
68. Based on their positions in the periodic table, predict which has the largest atomic radius: Li,
Rb, N, F, I.
Solution
Rb
69. Based on their positions in the periodic table, predict which has the largest first ionization
energy: Mg, Ba, B, O, Te.
Solution
O
70. Based on their positions in the periodic table, predict which has the smallest first ionization
energy: Li, Cs, N, F, I.
Solution
Cs
71. Based on their positions in the periodic table, rank the following atoms in order of increasing
first ionization energy: F, Li, N, Rb.
Solution
Rb < Li < N < F
72. Based on their positions in the periodic table, rank the following atoms or compounds in
order of increasing first ionization energy: Mg, O, S, Si.
Solution
Mg < Si < S < O
73. Atoms of which group in the periodic table have a valence shell electron configuration of
ns2np3?
Solution
15 (5A)
74. Atoms of which group in the periodic table have a valence shell electron configuration of
ns2?
Solution
2 (2A)
75. Based on their positions in the periodic table, list the following atoms in order of increasing
radius: Mg, Ca, Rb, Cs.
Solution
Mg < Ca < Rb < Cs
76. Based on their positions in the periodic table, list the following atoms in order of increasing
radius: Sr, Ca, Si, Cl.
Solution
Cl < Si < Ca < Sr
77. Based on their positions in the periodic table, list the following ions in order of increasing
radius: K+, Ca2+, Al3+, Si4+.
Solution

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