Which of the following transition elements have nearly the same atomic radii?
- A$Mn, \, Fe, \, Co, \, Ni$
- B$Cr, \, Mn, \, Fe, \, Cu$
- C$Cr, \, Mn, \, Fe, \, Co$
- D$Mn, \, Fe, \, Cu, \, Ni$
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Which of the following ions is diamagnetic?
Easy
View SolutionWhich pair of metal ions in their respective oxidation states forms colourless compounds?
Which of the following statements are correct about $Zn, Cd$ and $Hg$?
$A$. They exhibit high enthalpy of atomization as the d-subshell is full.
$B$. $Zn$ and $Cd$ do not show variable oxidation state while $Hg$ shows $+I$ and $+II$.
$C$. Compounds of $Zn, Cd$ and $Hg$ are paramagnetic in nature.
$D$. $Zn, Cd$ and $Hg$ are called soft metals.
Choose the most appropriate from the options given below:
$A$. They exhibit high enthalpy of atomization as the d-subshell is full.
$B$. $Zn$ and $Cd$ do not show variable oxidation state while $Hg$ shows $+I$ and $+II$.
$C$. Compounds of $Zn, Cd$ and $Hg$ are paramagnetic in nature.
$D$. $Zn, Cd$ and $Hg$ are called soft metals.
Choose the most appropriate from the options given below:
DifficultJEE MAIN 2024
View SolutionWhat are interstitial compounds? Why are such compounds well known for transition metals?
Medium
View SolutionPairs of elements with the same number of electrons in their respective $4f$ orbital are [Atomic number: $Eu-63, Gd-64, Dy-66, Ho-67, Tm-69, Yb-70, Lu-71, Hf-72$]. Choose the correct answer from the options given below:
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