Which of the following is correct
Gun metal :$Cu + Zn + Sn$
Duralumin : $Al + Cu + Mg + Ag$
German silver : $Cu + Zn + C$
Solder : $Pb + Al$
Explain the variations in atomic radii of transition elements in group.
Which one of the following characteristics of the transition metals is associated with their catalytic activity
The highest magnetic moment is shown by the transition metal ion with the outer electronic configuration
Which of the following statements is not true in regard to transition elements
$\mathrm{E}^{\circ}$ of $\mathrm{Cu}$ is $+0.34 \mathrm{~V}$ while that of $\mathrm{Zn}$ is $-0.76 \mathrm{~V}$. Explain.