Lead

3D Model

Pb, Lead. Atomic number 82. Average atomic mass of 207.20 g/mol. Group 14, period 6. 82 protons, 82 electrons, and 126 neutrons, (total mass = 208 amu) which makes this Lead-208, the most common lead isotope. Lead has 4 valence electrons. Its energy level structure is as follows: 2, 8, 18, 32, 18, 4.

In the 3d model, which you can download and view in Blender, yellow represents the electrons, red represents the neutrons, and blue represent the protons.

Lead, as a whole element, is usually the ending point for radioactive decay chains, and this element is the heaviest stable, or non-radiating, element on the table. Due to it being so heavy and dense, it is usually used to weigh objects down underwater. Its usage as a material sees itself few and far between due to its toxicity to human beings. It was previously used in paint (removed from paint due to toxicity) and is currently used in bullets, x-ray protection, and underwater cable protection.