Nitric Acid 3D Molecular Model — CAS 7697-37-2
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Free educational Nitric Acid model (HNO3, CAS 7697-37-2) with an engraved element symbol on every atom.
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Nitric Acid (HNO3, CAS 7697-37-2) — a free educational 3D molecular model for teachers and students, by MolGod.org. Element symbols are cut into each atom sphere: a self-labelled teaching aid.
Follow the chain of Nitric Acid from end to end: 5 atoms, 4 bonds (3 single and 1 double) and no ring anywhere. Hand the model round and let students tally the engraved atoms: 1 H + 1 N + 3 O, 5 in total. This molecule gives students these functional groups to identify: nitro group (-NO2). Pair it with Nitromethane (CAS 75-52-5) from the same collection to compare closely related structures.
MolGod.org publishes its molecular models free of charge for teachers and students. Teachers: hand out printed copies and ask students to rebuild the structural formula from the model.
Full record and more free models: https://molgod.org/molecule/7697-37-2/?utm_source=printables&utm_medium=referral&utm_campaign=edu-3d-models
Licence & provenance: https://molgod.org/licenses/stl/7697-37-2/
Same file on Wikimedia Commons: https://commons.wikimedia.org/wiki/File:Nitric_Acid-3D-molecular-model-engraved-CAS-7697-37-2.stl
A ball-and-stick model of Nitric Acid with each element symbol recessed into its atom sphere, generated by MolGod.org from a PubChem-computed 3D conformer (not an experimental crystal structure); atomic coordinates and connectivity are unchanged. STL mesh: 76,986 triangles, closed (watertight) single solid. Coordinates in ångström (STL stores no unit) — scale the model deliberately in your slicer.
Names in other languages: Salpetersäure (de); acide nitrique (fr); acido nitrico (it); salpeterzuur (nl); kwas azotowy (pl); 硝酸 (zh).
Chemical identity
CAS Registry Number: 7697-37-2
Molecular formula: HNO3
Molar mass: 63.013 g/mol (exact mass 62.995642894)
IUPAC name: nitric acid
MolGod ID: MG_912-647-617-05 (https://molgod.org/id/MG_912-647-617-05)
PubChem CID: 944 (https://pubchem.ncbi.nlm.nih.gov/compound/944)
Wikidata: Q83320 (https://www.wikidata.org/wiki/Q83320)
EC number: 231-714-2
ChemSpider ID: 919
InChIKey: GRYLNZFGIOXLOG-UHFFFAOYSA-N
SMILES: [N+](=O)(O)[O-]
Required attribution (CC BY-SA 4.0): "Nitric Acid 3D model by MolGod.org — https://molgod.org/molecule/7697-37-2/ — CC BY-SA 4.0"
Licence text: https://creativecommons.org/licenses/by-sa/4.0/