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an ionic compound has a unit cell consisting of a
Question:
An ionic compound has a unit cell consisting of A ions at the corners of a cube and B ions on the centres of the faces of the cube. The empirical formula for this compound would be:
MHT CET
Updated On:
Jul 12, 2024
(A)
A
B
(B)
A
2
B
(C)
A
B
3
(D)
A
3
B
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The Correct Option is
C
Solution and Explanation
Explanation:
Since
A
is present at the 8 corners, number of
A
ions per unit cell
=
1
8
×
8
=
1
Since
B
is present at the centre of 6 faces, number of
B
per unit cell
=
1
2
×
6
=
3
∴
The ratio of
A
and
B
is
1
:
3
, so the formula of the compound is
A
B
3
.Hence, the correct option is (C).
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