Editing Period 4 element (section)

===Germanium===
[[File:Polycrystalline-germanium.jpg|frameless|left|upright=0.3]]
[[Germanium]] (Ge) is an element in [[carbon group|group&nbsp;14]]. Germanium, like [[silicon]] above it, is an important [[semiconductor]] and is commonly used in diodes and transistors, often in combination with arsenic. Germanium is fairly rare on Earth, leading to its comparatively late discovery. Germanium, in compounds, can sometimes irritate the eyes, skin, or lungs.