JEE Main 2004 Chemistry question
The soldiers of Napolean army while at Alps during freezing winter suffered a serious problem as regards to the tin buttons of their uniforms. White metallic tin buttons got converted to grey powder. This transformation is related to
Answer: (4)
Solution
Below 13.2°C, white (β, metallic, tetragonal) tin slowly changes into grey (α, diamond-cubic, non-metallic) tin, a brittle powder — the
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