Question Detail

CHM 102 Sblock elements Objective Question
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Question

Why do metals in the lower half of Group 1 tend to form more complicated oxides (peroxides and superoxides) instead of simple oxides?
Options
A The formation of simple oxides is energetically unfavorable for larger ions.
B Their larger metal ions have a low charge density, which allows for the formation of more complicated, energetically stable oxide systems.
Correct Answer
C They have higher ionization energies, which favors more complex oxygen species.
D Their small ionic size leads to strong polarization of complicated oxide ions.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 9 explains that 'The formation of more complicated oxides (i.e. peroxides and superoxides) from the metals releases more energy and makes the system more energetically stable.' It further clarifies that 'This is true for the metals in the lower half of the group where the metal ions are big and have a low charge density.'

Hint

Consider the relationship between ion size, charge density, and the stability of different oxide forms, particularly for larger ions.

Question Info

Course: CHM 102
Topic: Sblock elements
Type: Objective
Difficulty: Not specified
Question 1812 of 1999
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