The most basic hydroxide among the following is-
- A$Pr(OH)_3 \ (Z=59)$
- B$Sm(OH)_3 \ (Z=62)$
- C$Ho(OH)_3 \ (Z=67)$
- D$La(OH)_3 \ (Z=57)$
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Similar Questions
Which of the following actinoids exhibits only $+3$ oxidation state?
The Lanthanoid contraction is responsible for the fact that
Easy
View SolutionAll those elements belong to $f-$block whose atomic numbers are
Easy
View SolutionLanthanoid ions with $4f^7$ configuration are :
$A$. $Eu^{2+}$
$B$. $Gd^{3+}$
$C$. $Eu^{3+}$
$D$. $Tb^{3+}$
$E$. $Sm^{2+}$
Choose the correct answer from the options given below :
$A$. $Eu^{2+}$
$B$. $Gd^{3+}$
$C$. $Eu^{3+}$
$D$. $Tb^{3+}$
$E$. $Sm^{2+}$
Choose the correct answer from the options given below :
The number of unpaired electrons in the uranium $({ }_{92} U)$ atom is:
MediumWBJEE 2020
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