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Tardigrade
Question
Chemistry
CrO3 dissolves in aqueous NaOH to give
Q.
C
r
O
3
dissolves in aqueous
N
a
O
H
to give
2190
289
The d-and f-Block Elements
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A
C
r
O
4
2
−
54%
B
C
r
(
O
H
)
3
15%
C
C
r
2
O
7
2
−
16%
D
C
r
(
O
H
)
2
15%
Solution:
C
r
O
3
+
2
N
a
O
H
→
N
a
2
C
r
O
4
+
H
2
O