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Tin is unaffected by air at ordinary temperature due to its?

Chemistry
JAMB 2017

Tin is unaffected by air at ordinary temperature due to its?

  • A. Low melting point
  • B. Weak electropositive character
  • C. High boiling point
  • D. White lustrous appearance
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Correct Answer: Option B
Explanation

Tin is unaffected by air even at ordinary temperature because it forms a thin, protective oxide layer on it's surface. 

None of the options provided directly explain why tin is unaffected by air. However, for the sake of the examination and choosing the best among the four options, it will be weak electropositive character, as it implies that tin is less reactive.

There is an explanation video available below.


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Explanation Video

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