Identify the correct statement from the following:
- ALanthanoids have a greater tendency to form complexes than actinoids.
- BActinoid contraction is greater than lanthanoid contraction.
- CHydroxides of actinoids are less basic than lanthanoid hydroxides.
- DBinding energy of $4f$-orbitals is lower than $5f$-orbitals.
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Similar Questions
State the $E^o$ values of lanthanoids and provide their reactions with the following: $(i)$ $H_2$,$(ii)$ Carbon,$(iii)$ Dilute acid,$(iv)$ Halogens,$(v)$ $O_2$,and $(vi)$ $H_2O$.
Fill in the blanks:
$1.$ The atomic radii of the elements of the third transition series are .......... to those of the corresponding elements of the second transition series.
$2.$ Samarium melts at .......... $K$.
$3.$ The color of lanthanoid ions is due to the presence of .......... electrons.
$1.$ The atomic radii of the elements of the third transition series are .......... to those of the corresponding elements of the second transition series.
$2.$ Samarium melts at .......... $K$.
$3.$ The color of lanthanoid ions is due to the presence of .......... electrons.
Difficult
View SolutionWhich of the following transition metal is present in misch metal?
Medium
View SolutionThe correct order of ionic radii of $Ce, La, Pm$ and $Yb$ in $+3$ oxidation state is:
Medium
View SolutionIdentify the lanthanoid element from the following.
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