Pair of ions which are having same number of unpaired electronsA. `Eu^(3+), Tb^(3+)`B. `Eu^(3+), Ce^(3+)`C. `Eu^(3+), Sm^(3+)`D. `Eu^(3+), Pr^(3+)`

Pair of ions which are having same number of unpaired electronsA. `Eu^

1.	Pair of ions which are having same number of unpaired electronsA. `Eu^(3+), Tb^(3+)`B. `Eu^(3+), Ce^(3+)`C. `Eu^(3+), Sm^(3+)`D. `Eu^(3+), Pr^(3+)`
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Pair of ions which are having same number of unpaired electronsA. `Eu^(3+), Tb^(3+)`B. `Eu^(3+), Ce^(3+)`C. `Eu^(3+), Sm^(3+)`D. `Eu^(3+), Pr^(3+)`

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