Question

100 points! Formation of an Ion

Aluminum is one of the most common elements in Earth's crust, yet it is never found as a pure element in nature. That is, aluminum atoms are always combined with atoms of other elements, such as oxygen. An aluminum oxide compound you will recognize by its name is the gemstone called "ruby". Its chemical formula is

Al2O3

If every oxygen ion (combined with an aluminum ion) has a charge of -2, what must the charge of each aluminum ion be? How can you tell this? Also, what has to happen to an uncharged aluminum atom so that it will bond with oxygen?

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Answer 1

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If every oxygen is combined with an aluminium ion, it has a charge of -2, The charge of each aluminum ion would be -3.

Uncharged Aluminum atom must need to lose it's electrons,in order to form the bond with oxygen which has vacant orbitals

ion

atom that has a positive or negative charge because it lost or gained one or more electrons

chemical bond

the attractive force that holds atoms or ions together

ionic bond

a chemical bond in which one atom loses an electron and the other atom gains electrons to form ions

chemical formula

a combination of chemical symbols and numbers to represent a substance

Thanks

covalent bond

bond formed by the sharing of electrons between atoms