1. Magnesium   Sir Humphry Davy   Neels H. D. Bohr   Sigmund Freud   Enrico Fermi   Hint Half-n-half Clue   2. Laws of Planetary Motion   Sir J. J. Thompson   Euclid   Neels H. D. Bohr   Johan Kepler   Half-n-half Clue   3. Heart Transplant Surgery   Charles Darwin   Sir Fredrick Grant Banting   Gregor Mendel   Christian Barnard   Half-n-half Clue   4. Laws of Electrolysis   Sir Humphry Davy   Karl Wilheim Scheele   Michael Faraday   Euclid   Half-n-half Clue   5. Potassium   Euclid   Sir Isaac Newton   Anton Von Leeuwenhock   Sir Humphry Davy   Half-n-half Clue   6. Sodium   Sir Humphry Davy   Christian Barnard   Enrico Fermi   Henry Cavendish   Half-n-half Clue   7. Malaria is carried by mosquitoes   Alexander Fleming   Ronald Ross   Sir Humphry Davy   Enrico Fermi   Half-n-half Clue