Question Detail

CHM 102 P block elements Objective Question
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Question

What happens to Lead dioxide (PbO₂) when heated above 300 °C?
Options
A It melts into a liquid phase without decomposition.
B It decomposes to PbO and O₂.
Correct Answer
C It reacts with atmospheric nitrogen.
D It forms a more stable higher oxide.
Correct Answer

Option B is the correct answer.

Detailed Explanation

Page 22 notes, 'PbO₂ decomposes to PbO and O₂ above 300 °C'.

Hint

Consider the stability of higher oxidation states for the heavier elements in Group 14.

Question Info

Course: CHM 102
Topic: P block elements
Type: Objective
Difficulty: Not specified
Question 1922 of 1999
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