The formula of an amphoteric oxide formed by a third period element is
A - VCE - SSCE Chemistry - Question 15 - 2004 - Paper 1
Question 15
The formula of an amphoteric oxide formed by a third period element is
A. Na2O
B. Al2O3
C. P2O5
D. Cl2O7
Worked Solution & Example Answer:The formula of an amphoteric oxide formed by a third period element is
A - VCE - SSCE Chemistry - Question 15 - 2004 - Paper 1
Step 1
Identify amphoteric oxides
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Answer
An amphoteric oxide can react with both acids and bases to form salts and water. Common examples include oxides of elements from group 13 (like aluminum) and certain transition metals.
Step 2
Analyze each option
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Answer
A. Na2O: Sodium oxide is a basic oxide.
B. Al2O3: Aluminum oxide is amphoteric as it can react with both acids and bases.
C. P2O5: Phosphorus pentoxide is acidic.
D. Cl2O7: Dichlorine heptoxide is also considered acidic.
Step 3
Select the correct answer
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Answer
Based on the analysis, the correct choice is B. Al2O3, as it is the only amphoteric oxide among the given options.
