Determine the stoichiometry of a perovskite oxide compound (e.g., SrTiO3) in terms of the number of cations and anions present in a unit cell

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Topic: Chemistry Posted 1 year ago

Determine the stoichiometry of a perovskite oxide compound (e.g., SrTiO3) in terms of the number of cations and anions present in a unit cell

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Koala Tutor

Oct 7, 2023

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To determine the stoichiometry of a perovskite oxide compound, such as SrTiO3, in terms of the number of cations and anions present in a unit cell, we need to look at the chemical formula of the compound.

In the case of SrTiO3, the chemical formula tells us that there are 1 strontium ion (Sr2+), 1 titanium ion (Ti4+), and 3 oxygen ions (O2-) in each unit cell.

Therefore, the stoichiometry of SrTiO3 can be written as:

1 Sr2+ : 1 Ti4+ : 3 O2-

This means that in each unit cell of SrTiO3, there is one strontium ion, one titanium ion, and three oxygen ions present.

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