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Chalcogens
chemical elements by classification
Question | Answer |
---|---|
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) |