Question

Among the given group 14 elements, the one with highest density is

• A. Carbon
• B. Silicon
• C. Tin
• D. Lead

Hint:

In Group 14, density generally increases on moving down the group: \[ C \lt Si \lt Ge \lt Sn \lt Pb \] Lead has the highest density because of its very high atomic mass.

Answer 1

The Correct Option is D

Density depends on how much mass is packed into a given volume, and going down group 14 from carbon to lead, atomic mass climbs far faster than atomic size does. Since mass grows so much more steeply than volume, density has to increase steadily as we descend the group.

Carbon and silicon are light, low density non-metal and metalloid. Tin is noticeably denser once we reach a proper metallic element, and lead, sitting at the very bottom of the group with the heaviest nucleus of the set, packs the most mass per unit volume of all.

So among carbon, silicon, tin and lead, lead has the highest density, and the correct choice is option (4).