d and f-Block ElementsHard
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
Options
A.an interaction with nitrogen of the air at very low temperatures
B.an interaction with water vapour contained in the humid air
C.a change in the partial pressure of oxygen in the air
D.a change in the crystalline structure of tin
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