In $d-$ block $3d$ series, which of the following element has maximum size ?
$Mn$
$Fe$
$Zn$
$Sc$
Why transition elements form a coloured compounds?
Which one of the following statements shows the correct percentage of carbon in steel, pig iron and wrought iron
Which have melting point below $500\,^{\circ} C$.
Which of the following elements is alloyed with copper to form brass
On heating $Mn{(OH)_2}$ with $Pb{O_2}$ and conc. $HN{O_3}$ pink colour is obtained due to the formation of