Least reactive metal is
$Fe$
$Os$
$Ni$
$Pt$
Which $d-$ block element is expected to have highest enthalpy of atomisation, among the following ?
Presence of $Cr$ in steel makes it
Permanent magnet is made from
The correct order of decreasing third ionisation enthalpy of $Ti, \,V,\, Cr,\, Mn$ is
$\underbrace {\mathop {Hg{I_2}\,}\limits_{'X'} \xrightarrow[{Sublimation}]{\Delta }\,\mathop {Hg{I_2}}\limits_{'Y'} \xrightarrow{{Cooling}}\mathop {Hg{I_2}}\limits_{'Z'} }_{On\,\,rubbing}$