The electronic configuration of ${ }_{59} Pr$ $(Praseodymium)$ is
- A$[ { }_{54} Xe ] 4 f^2 5 d^1 6 s^2$
- B$[ { }_{54} Xe ] 4 f^1 5 d^2 6 s^2$
- C$[ { }_{54} Xe ] 4 f^3 6 s^2$
- D$[ { }_{54} Xe ] 4 f^3 5 d^2$
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Similar Questions
Which of the following has the maximum number of unpaired electrons?
MediumIIT 1996
View SolutionWhich among the following elements does not have any electron in the $f-$subshell in either its expected or observed electronic configuration?
Consider the following pairs of elements and identify the pairs of elements which have nearly same atomic radius.
$I$. $Y, La$
$II$. $Zr, Hf$
$III$. $Mo, W$
$IV$. $Cr, Mo$
$I$. $Y, La$
$II$. $Zr, Hf$
$III$. $Mo, W$
$IV$. $Cr, Mo$
Which of the following metals make the most efficient catalyst?
Easy
View SolutionMatch the following:
List-$I$ (Transition metal,$M$) List-$II$ ($E_{M^{2+}/ M}^{\ominus}$ in $V$) $A$. $Ni$ $I$. $-1.18$ $B$. $Mn$ $II$. $-0.91$ $C$. $Fe$ $III$. $-0.25$ $D$. $Cr$ $IV$. $-0.44$
The correct answer is
| List-$I$ (Transition metal,$M$) | List-$II$ ($E_{M^{2+}/ M}^{\ominus}$ in $V$) |
| $A$. $Ni$ | $I$. $-1.18$ |
| $B$. $Mn$ | $II$. $-0.91$ |
| $C$. $Fe$ | $III$. $-0.25$ |
| $D$. $Cr$ | $IV$. $-0.44$ |
The correct answer is
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