A) aluminium
B) sodium
C) bromine
D) iodine
Correct Answer: D
Solution :
Hydride of AI and Na are basic while that of Br and I are acidic. But \[B{{r}_{2}}\] is a liquid at room temperature and \[{{I}_{2}}\] is a solid. Thus, the solid is iodine. \[{{I}_{2}}+{{H}_{2}}\xrightarrow{\,}\,\underset{\begin{smallmatrix} \text{Hydrogen}\,\,\text{iodide}\, \\ \,\,\,\,\,\,\,\,\,\,\,\,\,\text{(acidic)} \end{smallmatrix}}{\mathop{2HI}}\,\]
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