MCQ
An ion which has 18 electrons in the outermost shell is:
- A$K ^{+}$
- B$Cs ^{+}$
- C$Th ^{4+}$
- D$Cu ^{+}$
✓
Answer
D. $Cu ^{+}$
Explanation:
$Cu ^{+}$has $3 d^{10}$ configuration.
Explanation:
$Cu ^{+}$has $3 d^{10}$ configuration.
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