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no humans, molecular model, scientific diagram, chemistry textbook diagram, ball-and-stick model, formaldehyde molecule, trigonal planar, front view, centered composition, technical illustration, labeled, text, bond angle, double bond, single bond, dark gray sphere, red sphere, white sphere, teal bonds, cyan accents, off-white background, subtle grid texture, flat color, clean geometric lines, soft drop shadow, educational graphic In an orthogonal, perfectly centered technical diagrammatic view, a complete formaldehyde molecule is arranged in an accurate trigonal planar geometry across a flat, scientific display. At the center rests a dark gray and matte black carbon sphere, firmly positioned and labeled across its front face with a crisp, centered white capital letter "C". Extending upward along the vertical axis, a visually emphasized double bond connects the carbon to an oxygen atom, rendered as two parallel, evenly spaced cylindrical rods in a bright teal and cyan shade. Terminating this double bond is a vivid red oxygen sphere, marked cleanly in its center with a white capital letter "O". Angling downward and outward symmetrically from the carbon atom are two slender, cylindrical single bonds drawn as smooth light gray sticks, each terminating in a small white sphere representing a hydrogen atom; each hydrogen sphere is labeled at its optical center with a fine dark gray capital letter "H". A delicate, curved technical arc is drawn between the bonds to indicate the molecular geometry, accompanied by precise, small text reading "116-120". In the lower corner of the frame, the molecular formula is printed neatly in an academic sans-serif typeface reading "HCHO". Diffuse, perpendicular diagram lighting casts faint, uniform soft drop shadows directly behind each sphere and connecting rod onto the support plane, grounding the three-dimensional form without obscuring lines. The background is a clean off-white and light cream paper ground overlaid with a subtle, ultra-faint scientific blueprint grid of pale gray rules. Crisp geometric edges, flat color planes, and minimal surface modeling maintain textbook clarity, rigorous and pristine.

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