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  • Which of the following statements is true about the chemical properties of aluminium?Option: 1  Aluminum forms stable +2 oxi

Which of the following statements is true about the chemical properties of aluminium?

Option: 1

 Aluminum forms stable +2 oxidation states.


Option: 2

 Aluminium reacts with acids to produce hydrogen gas.


Option: 3

 Aluminum exhibits amphoteric behaviour.

 


Option: 4

 Aluminum does not react with oxygen at room temperature.


Answers (1)

best_answer

 Aluminium is amphoteric, meaning it can act as both an acid and a base. It reacts with strong bases, such as sodium hydroxide, to form aluminate ions, and with strong acids, such as hydrochloric acid, to form aluminium chloride and hydrogen gas.  Hence option 3 is the correct answer. 

Option(1) Aluminium does not form stable +2 oxidation states, as it has a valence electron configuration of  3s^{2}3p^{1} and tends to lose its three valence electrons to form a +3 oxidation state. Hence option 1 is incorrect.

Option(2) Aluminum does not react with acids to produce hydrogen gas, as it is not a metal with a low reduction potential.  Hence option 2 is incorrect.

Option(4) Aluminum does react with oxygen at high temperatures to form aluminium oxide. Hence option 4 is incorrect.

 

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