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Chemistry
Chemistry
Problem
Which ions have the electron configuration
1
s
2
2
s
2
2
p
6
3
s
2
3
p
6
1\text{s}^2 2\text{s}^2 2\text{p}^6 3\text{s}^2 3\text{p}^6
1
s
2
2
s
2
2
p
6
3
s
2
3
p
6
? - I.
Ca
2
+
\text{Ca}^{2+}
Ca
2
+
II.
Ti
4
+
\text{Ti}^{4+}
Ti
4
+
III.
Cu
2
+
\text{Cu}^{2+}
Cu
2
+
a. I and II b. I and III c. II and III d. I, II and III
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