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Tardigrade
Question
Chemistry
In 3 d series, the metal having the highest M 2+ / M standard electrode potential is
Q. In
3
d
series, the metal having the highest
M
2
+
/
M
standard electrode potential is
404
187
JEE Main
JEE Main 2022
Electrochemistry
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A
C
r
16%
B
F
e
12%
C
C
u
44%
D
Z
n
28%
Solution:
C
r
+
2
/
C
r
→
−
0.90
V
F
e
+
2
/
F
e
→
−
0.44
V
C
u
+
2
/
C
u
→
+
0.34
V
Z
n
+
2
/
Z
n
→
−
0.76
V
So Ans.
C
u
+
2
/
C
u