The maximum number of oxidation states of a transition metal is derived from which of the following electronic configurations?
- A$ns$ electron
- B$(n-1)d$ electron
- C$(n+1)d$ electron
- D$ns + (n-1)d$ electron
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The electronic configuration of copper $({_{29}}Cu)$ is
Which of the following species is paramagnetic? $Fe^{2+}, Zn^0, Hg^{2+}, Ti^{4+}$
Medium
View SolutionWhich 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.
Medium
View SolutionWhat is enthalpy of atomisation? Explain. $OR$ Write a note on enthalpy of atomisation.
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View SolutionWhat should be the difference in atomic radii between two metal elements to form an alloy?
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