Tetrahedral

Science / Chemistry / Tetrahedral: A molecular shape that results when there are four bonds and no lone pairs around the central atom in the molecule. The atoms bonded to the central atom lie at the corners of a tetrahedron with 109.5° angles between them. The ammonium ion (NH4+) has a tetrahedral molecular geometry.

Diamond

Entertainment / Baseball / Diamond: The infield playing surface. MORE

Hybridization

Science / Chemistry / Hybridization: The combination of a set of atomic orbitals to produce a new set of 'hybrid' orbitals. Hybridized orbitals are theoretical constructions that make molecular structures easier to explain. For example, MORE

Molecular Geometry

Science / Chemistry / Molecular Geometry: 1. The three-dimensional shape of a molecule. For example, methane (CH4) has a tetrahedral molecular geometry. 2. The study of molecular shapes. MORE

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