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NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
Solid State

NTA Abhyas 2020 · Chemistry · Solid State

Perovskite is a mineral composed of Ca, Ti and oxygen, cations of...

Perovskite is a mineral composed of Ca, Ti and oxygen, cations of titanium lie at the centre, oxides ions at the face centres and calcium ions lie at corners. In this compound the oxidation number of Titanium is +x+ x . Find the value of x?

Correct answer

4

Step-by-step solution

Number of Ca2+C{a}^{2 +} ions =8×18=1= 8 \times \dfrac{1}{8} = 1
Number of Ti =1= 1
Number of O−2{O}^{- 2} ions =6×12=3= 6 \times \dfrac{1}{2} = 3
So the formula of perovskite =CaTiO3= CaTi{O}_{3}
In CaTiO3CaTi{O}_{3} let oxidation number of Ti = x
2+x−6=02 + x - 6 = 0
x=+4x = + 4
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