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JEE Main Chemistry Class 11 Redox Reactions Questions
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© examsnet.com
Question : 57
Total: 79
The oxidation states of transition metal atoms in
K
2
C
r
2
O
7
,
K
M
n
O
4
and
K
2
F
e
O
4
, respectively, are
x
,
y
and
z
. The sum of
x
,
y
and
z
is ______,
[NV, Sep. 02, 2020 (II)]
Your Answer:
Validate
Solution:
Compound
Oxidation state oftransition element
(i)
K
2
C
r
2
O
7
x
=
+
6
(ii)
K
M
n
O
4
y
=
+
7
(iii)
K
2
F
e
O
4
z
=
+
6
So,
(
x
+
y
+
z
)
=
6
+
7
+
6
=
19
© examsnet.com
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