Which is the largest atom in Group 14?

Group 14:

1. The members of Group 14 are Carbon (C), Silicon (Si), Germanium (Ge), Tin (Sn), and Lead (Pb).
2. This group is known as The Carbon family.

Largest Group 14 atom:

1. Lead is a soft metal with an electronic configuration $\left[\mathrm{Xe}\right]4{\mathrm{f}}^{14}5\mathrm{d}6{\mathrm{s}}^{2}6{\mathrm{p}}^2$.
2. The largest element of Group 14 is Lead (Pb) because it has atomic mass ($207.2{\mathrm{gmol}}^{-1}$) as compared to the other elements of this group.
3. The covalent radius of Lead (146pm) is also larger due to the presence of completely filled d and f orbital in this member.
4. It has a higher density of $11.34{\mathrm{gcm}}^{-3}$ with an ionic radius of $78\mathrm{pm}$.