CHEM 131 Lecture Notes - Lecture 2: Pierre Curie, Ionic Compound, Ionic Bonding
Document Summary
When elements combine to form compounds, they do so in fixed proportion. When elements form compounds, the element don"t change but how they combine does: early 1900"s, scientist discovered protons, neutrons, electrons. 1: roentgen discover x-rays, maine and pierre curie radioactivity consist of three types of particles. Isotope atoms with the same atomic number but different mass ( due to a different number of neutrons) A = mass number ( protons + neutrons) Ions cations + ( metal) anion ( nonmetal) o ionic bond electrostatic attraction between ion of opposite charge. Covalent compound nonmetal combine with nonmetal o covalent bond a sharing of electrons between nonmetal. Name the metal cation using the element name. If the metal can for more than one cation, use a stock number ( roman numerals) to indicate the charge on the metal cation. Name a monoatomic anion using the first syllable of element name and at -icle ending.
