In making gun-berrel, the steel used is
$Fe - Mn$
$Fe - Cr$
$Fe - W$
$Ni - Mo$
Which is not amphoteric
Which metal is present in brass, bronze and German silver
The aqueous solution of $CuCrO_4$ is green because it contains
Calculate the 'spin only' magnetic moment of $M ^{2+}(\operatorname{aq})$ ion $(Z=27)$
In which of the following ionic radii of chromium would be smallest