Identify the correct statement from the following:
UK 'copper' coins are Cu/Ni alloy. AgBr has special light-sensitive properties. Ti\(^{2+}\), V\(^{2+}\), Cr\(^{2+}\) are strong oxidising agents. The magnetic moment of V\(^{2+}\) is 2.84 BM.
Identify the correct statement from the following:
UK 'copper' coins are Cu/Ni alloy. AgBr has special light-sensitive properties. Ti\(^{2+}\), V\(^{2+}\), Cr\(^{2+}\) are strong oxidising agents. The magnetic moment of V\(^{2+}\) is 2.84 BM.
Show Hint
- UK 'copper' coins are Cu/Ni alloy
- AgBr has special light-sensitive properties
- Ti\(^{2+}\), V\(^{2+}\), Cr\(^{2+}\) are strong oxidising agents
- The magnetic moment of V\(^{2+}\) is 2.84 BM
The Correct Option is B
Approach Solution - 1
Evaluate each statement for factual accuracy. - AgBr is indeed known for its light-sensitive properties, commonly used in photographic films due to its ability to decompose to silver and bromine upon exposure to light.
Conclusion: The statement about AgBr's light-sensitive properties is correct, making option (2) the correct answer.
Approach Solution -2
To solve the problem, we need to identify the correct statement from the given options.
1. Analyzing the Options:
Option 1: "UK 'copper' coins are Cu/Ni alloy" – This statement is incorrect UK coins, particularly the "copper" coins, are made from a copper-nickel alloy, not pure copper. However, the composition includes a mixture of copper and nickel, making this technically a copper-nickel alloy rather than pure copper.
Option 2: "AgBr has special light-sensitive properties" – This statement is correct. Silver bromide (AgBr) is known for its light-sensitive properties, which is why it is used in photographic films and plates.
Option 3: "Ti²⁺, V²⁺, Cr²⁺ are strong oxidizing agents" – This statement is incorrect. These ions (Ti²⁺, V²⁺, Cr²⁺) are actually reducing agents, not oxidizing agents.
Option 4: "The magnetic moment of V²⁺ is 2.84 BM" – This statement is incorrect. The magnetic moment of V²⁺ (vanadium ion with a 2+ charge) is typically around 1.73 BM, not 2.84 BM. The provided value is not correct.
2. Conclusion:
The correct statement is that AgBr has special light-sensitive properties.
Final Answer:
The correct option is (B) AgBr has special light-sensitive properties.
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