If the atomic number of an element is $58,$ it will be placed in the periodic table in the
- A$III-B$ group and $6^{th}$ period
- B$IV-B$ group and $6^{th}$ period
- C$V-B$ group and $7^{th}$ period
- Dnone of these
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Similar Questions
Identify 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.
Name the member of the lanthanoid series which is well known to exhibit $+4$ oxidation state.
Describe the general chemical reactions of lanthanoids with the help of a diagram and state their uses.
Which one of the following lanthanide ions does not exhibit paramagnetism?
In $f$-block elements,which orbitals are progressively filled by electrons?
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