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IRINA_888 [86]
4 years ago
7

100 points! Formation of an Ion

Chemistry
2 answers:
Zina [86]4 years ago
7 0

Al belongs to group III elements in periodic table so it forms Al3+ ion. check w the formula Al2O3:  2x(+3) from Al = +6 which equal to 3x(-2) from O. so its balanced.

Al ionizes from neutral to Al3+ and 3 e- to bond w O.

djyliett [7]4 years ago
6 0

Given the chemical formula Al2O3  and every oxygen ion (combined with an aluminum ion) has a charge of -2, the total negative charge is -2x3 = -6.

As Al2O3 is neutral, the total positive charge must be 6.  The charge of each aluminum ion is 6/2 = 3.

An uncharged aluminum atom must lose 3 electrons so that it will bond with oxygen.

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