Why is $_{21}Sc$ not considered a transition element?
- AThe $d$-orbital is empty in its stable compounds.
- BThe size of the $Sc$ ion is very small.
- CIt does not exhibit more than one oxidation state.
- DIt possesses both acidic and basic properties.
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The ions of $d$-block elements are paramagnetic because.....
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View SolutionWhich among the following elements does not have any electron in the $f-$subshell in either its expected or observed electronic configuration?
Which of the following statements are correct about $Zn$,$Cd$ and $Hg$?
$(I)$ They exhibit high enthalpies of atomisation as the $d-$subshell is full.
$(II)$ $Zn$ and $Cd$ do not show variable oxidation states while $Hg$ shows $+I$ and $+II$.
$(III)$ Compounds of $Zn$,$Cd$ and $Hg$ are paramagnetic in nature.
$(IV)$ $Zn$,$Cd$ and $Hg$ are called soft metals.
$(I)$ They exhibit high enthalpies of atomisation as the $d-$subshell is full.
$(II)$ $Zn$ and $Cd$ do not show variable oxidation states while $Hg$ shows $+I$ and $+II$.
$(III)$ Compounds of $Zn$,$Cd$ and $Hg$ are paramagnetic in nature.
$(IV)$ $Zn$,$Cd$ and $Hg$ are called soft metals.
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