Which element is alloyed with copper to form bronze
$Fe$
$Mn$
$Sn$
$Zn$
How would you account for the irregular variation of ionisation enthalpies (first and second) in the first series of the transition elements?
The element exhibiting most stable $ + \,2$ oxidation state among the following is
Which of the following is paramagnetic
The colorless species is
Four successive members of the first row transition elements are listed below with atomic numbers. Which one of them is expected to have the highest $E^o_{M^{3+} /M^{2+}}$ value ?