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📚 Evolution of the Periodic Table in 60 Seconds! ⚛️ Confused about how the periodic table became what it is today? This handwritten cheat sheet takes you through the key scientists who shaped modern chemistry: 🧪 John Dalton (1803) – Atomic Theory 🔬 Döbereiner (1829) – Triads 🎵 Newlands (1864) – Law of Octaves 📖 Mendeleev (1869) – First Periodic Table & Predicted Missing Elements ⚛️ Moseley (1913) – Atomic Number Arrangement 🧬 Seaborg (1940s) – Modern Periodic Table & Actinide Series Save this for revision, share it with a friend, and follow Study Hacks for more exam-ready science notes and handwritten cheat sheets. #Chemistry #PeriodicTable #StudyHacks #Science #JAMB