Solutions English chemist who formulated modern atomic theory has 4 entries with similar clues

• 12-letter words
• thomas-youngEnglish physicist whose major work is concerned with wave theory of light
• robert-hookeEnglish scientist who formulated the law of elasticity
• 23-letter words
• niels-henrik-david-bohrDanish physicist and pioneer in quantum physics whose theory of the structure of atom incorporated quantum theory for the first time
• svante-august-arrheniusSwedish chemist and one of the founders of modern physical chemistry