Question
Elements $A$ and $B$ with their respective electronic configurations $3{d^{10}}\,4{s^1}$ and $4{d^{10}}\,5{s^1}$ in their outermost shell are
✓
Answer
b
(b) Both are coinage metals
(b) Both are coinage metals
$3{d^{10}}\,4{s^1} - Cu$; $4{d^{10}}5{s^1} - Ag$
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