CHEM 1A03 Lecture Notes - Lecture 1: Allotropes Of Carbon, Alkali Metal, Alpha Helix

• School: McMaster University
• Department: Chemistry
• Course: CHEM 1A03
• Professor: All

Document Summary

Allotropes: different forms of the same element: recently discovered, carbon nanotubes have interesting electronic properties with many potential material applications, buckyballs is a different carbon allotrope that possesses a molecular form. 2. 5 oxidation state: monatomic ions: composed of a single charged atom (charge known as oxidation state, when atoms are bonded together to form a molecule, each atom has a hypothetical charge on it. These hypothetical charges are known as oxidation numbers. 2. 7 - nomenclature: oxidation state in brackets in roman numerals. Ionic compounds: metal + non-metal: sodium chloride, no need to indicate how much of each element there is because ions have particular charges and must combine in specific ratios, binary molecular compounds: non-metal + non-metal. 2. 11 isotopes: when the number of neutrons change, the mass number also changes and this creates isotopes, candu uses deuterium instead of hydrogen, which contains one extra proton.