Aluminum toxicity has been implicated in a variety of disorders, including demen

Question

Aluminum toxicity has been implicated in a variety of disorders, including dementia. Dietary silicon has been investigated as a means of chelating aluminum ions and thus ameliorating their toxic effects. Despite the fact that silicon and aluminum are adjacent in the periodic table, they react differently with 6 M HCI, as demonstrated by the following reactions: Si + HCI rightarrow No reaction 6A1 + 6HC1 rightarrow 3H_2 + 2AICI_3 What best explains the difference in reactivity of silicon and aluminum? Silicon and aluminum are in different periods. Silicon and aluminum are in different groups. Silicon is a metalloid, while aluminum is a metal. Both silicon and aluminum are metalloids.

Explanation / Answer

Aluminium is a metal and reacts with HCl, loosing electron to form Al3+. But silicone (Si) is metalloid. It has reactivity in between metal and non-metal. Thus in normal reaction condition, Si is less reactive than Al and it does not react with HCl.

Hence the answer is

C. Silicone is a metalloid, while aluminium is a metal

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