1. Magnesium   Michael Faraday   Ronald Ross   William Harvey   Sir Humphry Davy   Hint Half-n-half Clue   2. X-rays   Karl Wilheim Scheele   Charles Darwin   Henry Cavendish   Wilhelm K. Roentgen   Half-n-half Clue   3. Calcium   Sir Isaac Newton   Ronald Ross   Sir Humphry Davy   Wilhelm K. Roentgen   Half-n-half Clue   4. Malaria is carried by mosquitoes   Anton Von Leeuwenhock   Enrico Fermi   Sir Humphry Davy   Ronald Ross   Half-n-half Clue   5. Aluminium   Hans Christian   Johan Kepler   Sir Isaac Newton   Sir J. J. Thompson   Half-n-half Clue   6. Electron   Sir J. J. Thompson   Sir Humphry Davy   Johan Kepler   William Harvey   Half-n-half Clue   7. Sodium   Charles Darwin   Sir Humphry Davy   Gregor Mendel   Sir Isaac Newton   Half-n-half Clue