Water, hydrogen sulfide, and hydrogen selenide, three simple hydrogen chalcogenides
Hydrogen chalcogenides (also chalcogen hydrides or hydrogen chalcides) are binary compounds of hydrogen with chalcogen atoms (elements of group 16: oxygen, sulfur, selenium, tellurium, polonium, and livermorium). Water, the first chemical compound in this series, contains one oxygen atom and two hydrogen atoms, and is the most common compound on the Earth's surface.[1]
- ^ "CIA – The world factbook". Central Intelligence Agency. Retrieved 18 August 2016.