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the ability of an atom in a molecular entity to expand its valence shell beyond the limits of the Lewis octet rule, molekulaarstruktuuris oleva aatomi võime laiendada oma valentskihti väljapoole Lewise oktetireegli piiranguid
hüpervalentsus . Keemiaterminite baas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//kem/h%C3%BCpervalentsus/1/est (20.07.2026)
