What are the formulae of the compounds formed when lanthanoids $(Ln)$ react with nitrogen and halogen respectively?
- A$LnN$ and $LnX_3$
- B$LnN_3$ and $LnX$
- C$(Ln)_2 N_3$ and $LnX_3$
- D$LnN$ and $LnX$
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Elements in which $4f$ orbitals are progressively filled are called as
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View SolutionIdentify the correct statements from the following :
$I$. The ionic radius of $Pr^{3+}, Dy^{3+}$ and $Sm^{3+}$ follow the order,$Sm^{3+} > Pr^{3+} > Dy^{3+}$.
$II$. $Eu^{2+}$ acts as a strong reducing agent.
$III$. $Pu$ exhibits $+7$ oxidation state.
$I$. The ionic radius of $Pr^{3+}, Dy^{3+}$ and $Sm^{3+}$ follow the order,$Sm^{3+} > Pr^{3+} > Dy^{3+}$.
$II$. $Eu^{2+}$ acts as a strong reducing agent.
$III$. $Pu$ exhibits $+7$ oxidation state.
Which of the following exhibits only $+3$ oxidation state?
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View SolutionWhich among the following lanthanoids has the smallest atomic size?
Which pair of ions among the following can be separated by the precipitation method?
MediumWBJEE 2025
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