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Chalcogens

chemical elements by classification

QuestionAnswer
8 O Oxygen
Diatomic oxygen gas constitutes what percentage of the atmosphere? 20.8 %
Oxygen was discovered independently by whom? Carl Wilhelm Scheele or Joseph Priestley (Priestley's work was published first in 1774)
Oxygen's name was derived from what two words in greek? oxys, meaning acid and genes, meaning producer
Antoine Lavoisier conducted the first adequate quantitative experiments on oxidation and gave the first correct explanation of how what process works? Combustion
How many radioisotopes of oxygen have been characterized? 14
What is the boiling point of Oxygen? -297.31 F
16 S Sulfur
Sulfur was known as what in the bible? Brimstone
Pure sulfur has what smell? no smell
Sulfur compounds have what smell? rotten egg
What is the boiling point of Sulfur? 832.28 degrees F
Sulfur was isolated in 1809 by whom? Louis-Josef Gay-Lussac and Louis-Jacques Thénard
When burned, sulfur produces what color flame? blue
34 Se Selenium
Selenium is from the French word what? selene , meaning moon
Who discovered Selenium? Jons Berzelius in 1817
What is the boiling point of Selenium? 1264.8201 F
52 Te Tellurium
What is the boiling point of tellurium? 1813.64 F
tellurium is named for the greek word for what? tellus, meaning earth
Who discovered tellurium? Franz Muller von Reichenstein in 1782
84 Po Polonium
What is the boiling point of Polonium? 1763.6 F
Who discovered Polonium? Pierre and Marie Curie in 1898
What country is polonium named after? Poland
How is polonium obtained? decay of radium
116 Lv Livermorium
How is livermorium produced? synthetically in a lab
How many isotopes of livermorium exist? four
Livermorium is the heavest what group? chalcogen
What is livermorium named after? Lawrence Livermore National Laboratory (officially named in 2012)
Created by: Lailasmom