Technetium, the element below manganese in the Periodic Table, would be expected to have high values for its
$(I)$ melting point $(II)$ boiling point $(III)$ density
$I, II, III$
$I, II$
$II, III$
$I$ only
The correct order of the first ionization enthalpies is
An ornamental of gold having $75\%$ of gold, it is of .............. carat.
Spiegeleisen is an alloy of
Amongest following the lowest degree of paramagnetism per mole of the compound at $298 K$ will be shown by
The catalyst used in the hydrogenation of oils is