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Concept

silicon

The image depicts a molecular structure representing silicon, with a central black sphere surrounded by twelve smaller spheres connected by lines, symbolizing its atomic arrangement.

The element directly below carbon on the periodic table, with the same four outer electrons and a similar urge to share. Silicon does build chains and rings, but its bonds with itself are weaker than carbon's, and its bonds with oxygen are far stronger — which is why Earth's crust is mostly silicate rock and why proposed silicon-based life keeps stalling in the lab. It is, however, excellent at semiconducting.

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