How does aluminum form a complex ion upon oxidation?

1 Answer
anor277
Jul 10, 2017

Well have you got #Al^(3+)# or #AlI_3#?

Explanation:

Aluminum does form an complex ion.........

#Al^(3+) + 4HO^(-) rarr [Al(OH)_4]^(-)#

From alumina, and this is an important part in (energy-intensive) aluminum refining:

#Al_2O_3 + 2NaOH rarr 2Na^(+)[AlO_2]^(-) +H_2O#.......

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