Which among the following elements does not have any electron in the $f-$subshell in either its expected or observed electronic configuration?
- A$Lu (Z=71)$
- B$La (Z=57)$
- C$Eu (Z=63)$
- D$Nd (Z=60)$
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Similar Questions
Which one of the following sets correctly represents the increase in the paramagnetic property of the ions?
Most transition metals exhibit several characteristic properties. Which of the following statements are correct?
$I$: Form sets of compounds which display different oxidation states of the metal.
$II$: Form coloured ions in solution.
$III$: Burn vigorously in oxygen.
$IV$: Act as catalysts.
$I$: Form sets of compounds which display different oxidation states of the metal.
$II$: Form coloured ions in solution.
$III$: Burn vigorously in oxygen.
$IV$: Act as catalysts.
Easy
View SolutionWhich of the following has the maximum number of unpaired electrons?
(Atomic numbers: $Fe=26, Co=27, Mn=25, Cr=24$)
(Atomic numbers: $Fe=26, Co=27, Mn=25, Cr=24$)
Medium
View SolutionWhich of the following transition metal ions has a magnetic moment of $3.87 \ BM$?
Easy
View SolutionReactivity of transition elements decreases almost regularly from $Sc$ to $Cu$. Explain.
Medium
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