Einsteinium (Es) Albert Einstein – Relativity – E = mc 2 – Offered Presidency of Israel – Element 99 – Photoelectric effect • Solar calculator
Curium (Cm) • Madame Curie – Pioneer in radioactivity • (Ra = radium) – 25 pounds of pitchblende ore yields 1/1000 of a gram of radium – Emits 2 millions times as much radiation as uranium • (Rn = radon gas) – Discovered 5 elements – Nobel Prize (5 in Curie family) – Born in Poland • (Po = polonium) Marie Curie (1876– 1934)
Radium (Ra) Radium was used as a fluorescent paint on watch dials. It was applied with thin brushes that workers would lick to keep a fine tip. Many people died from the exposure to radium.
Radon Gas Zone 1 counties have a predicted average indoor radon screening level greater than 4 p. Ci/L (pico curies per liter) (red zones) Zone 2 counties have a predicted average indoor radon screening level between 2 and 4 p. Ci/L (orange zones) Zone 3 counties have a predicted average indoor radon screening level less than 2 p. Ci/L (yellow zones) Radon gas occurs naturally from the radioactive decay of radium. Radium is found in small amounts in rock. Ra Rn + radiation Predicted fraction of homes over 4 picocuries/liter radon http: //www. epa. gov/radon/zonemap. html
Nobelium (No) Element 102 Inventor: dynamite (TNT) blasting gelatin Trinitrotoluene Nobel Prize Alfred Nobel “Merchant of Death”
Seaborgium (Sg) Glenn Seaborg – Separated f-block from rest of periodic table – Worked on Manhattan Project (Atomic bomb) – Classified until after WW II – Element 106 • Only living person to have an element named for them
Silicon vs. Silicone • Silicon (Si) element • Silicone (…Si – O – Si…) polymer – Sealant (caulk) prevents leaks – Breast augmentation No cause-and-effect relationship exists between breast enlargement and breast cancer. Only one researcher found a causal link.
12 Magnesium Atomic Mass 24 amu melting point = silver gray metal used in flash bulbs, bombs, and flares 8 th most abundant element (2. 2% of Earth’s crust) lack of Mg produces same biological effect as alcoholism (delirium tremens) Mg 24. 305
Potassium Metal in Water Newmark, CHEMISTRY, 1993, page 25
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