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Question
Chemistry
Amphoteric oxides of Mn and Cr are
Q. Amphoteric oxides of Mn and Cr are
2586
235
The d-and f-Block Elements
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A
M
n
O
and
C
r
O
0%
B
M
n
2
O
3
and
C
r
2
O
3
25%
C
M
n
O
2
and
C
r
2
O
3
50%
D
M
n
2
O
7
and
C
r
O
3
25%
Solution:
M
n
O
2
and
C
r
2
O
3
are amphoteric.
M
n
O
is basic.
M
n
2
O
3
is weakly basic.
M
n
2
O
7
is strongly acidic.
C
r
O
is basic while
C
r
O
3
is acidic.