Least reactive metal is
$Fe$
$Os$
$Ni$
$Pt$
The aqueous solution containing which one of the following ions will be colourless
Which of the following compounds is metallic and ferromagnetic ?
In which of the following ionic radii of chromium would be smallest
Chloro compound of vanadium has only spin magnetic moment of $1.73\, BM$. This vanadium chloride has the formula:
The transition metal having highest $3^{\text {rd }}$ ionisation enthalpy is :