Question

Which of the following element is affected by water?

• A. C
• B. Si
• C. Sn
• D. Pb

Answer 1

The correct option is C Sn

Carbon, silicon and germanium are not affected by water.
Tin decomposes steam to form dioxide and dihydrogen gas.
$Sn+2H_{2}O\stackrel{△}{\to }Sn{O}_2+2H_2$
Lead is unaffected by water, due to the protective oxide film formation.

Hence, the correct answer is option (c).