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Chemistry
Chemistry
Problem
Which of the following ions has the electron configuration
[
Ar
]
3
d
8
[\text{Ar}]\,3d^{8}
[
Ar
]
3
d
8
? a)
Co
+
\text{Co}^{+}
Co
+
b)
Fe
2
+
\text{Fe}^{2+}
Fe
2
+
c)
Ni
2
+
\text{Ni}^{2+}
Ni
2
+
d)
Ni
+
\text{Ni}^{+}
Ni
+
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