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Now there's an electrostatic attraction between these atoms, which pulls the atoms closer together and strengthens this bond.
The result is an incredibly stable pyramid shaped unit called as silica tetrahedron.
But if you look at the oxygens in these corner spots, they've only shared one electron, but they actually want two to complete their outer shells.
Listen to native speakers pronounce “pyramid shaped” in real conversational contexts with synchronized timestamps and subtitles.