Question

The mineral perovskite has a structure that is the prototype of many $AB{X}_3$ solids particularly oxides. The perovskite structure is cubic with A atoms surrounded by 12 X atoms and the B atoms surrounded by 6 X atoms. The sum of charges on the cations A and B must be +6; it can be achieved in several ways $(A^{2+}{B}^{4+}$ and $A^{3+}{B}^{3+}$ among them). Oxidation state of titanium in $CaTi{O}_3$ (Perovskite) is

• A. +2
• B. +3
• C. +4
• D. +1

Answer 1

Answer: (C)

$CaTi{O}_3$
$+2+x-6=0$
$x=+4$