Which of the following set of elements does not belong to transitional elements set
$Fe,$ $Co,$ $Ni$
$Cu,$ $Ag,$ $Au$
$Ti,$ $Zr,$ $Hf$
$Ga,$ $In,$ $Tl$
The $d-$ block element which is a liquid at room temperature, having high specific heat, less reactivity than hydrogen and its chloride $(MX_2)$ is volatile on heating is
The magnetic moment of a transition metal compound has been calculated to be $3.87$ $B.M.$ The metal ion is
Pair of ions which gives blue colour in aqueous state :
$V^{+4},\,Ni^{+2},\, Ti^{+3}, \,Co^{+2}, \,Fe^{+3}, \,Cu^{+2}$
The element exhibiting most stable $ + \,2$ oxidation state among the following is
Presence of $Cr$ in steel makes it