Lambert - Chapter 7 - Ionic and Metallic Bonding

Two physical properties of metals are ductility and malleability. Explain these properties based on what you know about the valence electrons of metal atoms.

Ductile - be able to drawn into wires Malleable - hammered easily/bendable

Name the first four halogens. What group are they in, and how many valence electrons does each have?

Fluorine, chlorine, bromine, and iodine. They are in group/family 7A (or 17). They each have 7 valence electrons.

metallic bonds

consists of the attraction of the free-floating valence electrons for the positively charged metal ions

electron dot structure

diagrams that show valence electrons as dots

valence electrons

the electrons in the highest occupied energy level of an element's atoms

ionic bonds

the electrostatic forces that hold ions together in ionic compounds

halide ion

the ions that are produced when atoms of chlorine and other halogens gain electrons

coordination number

the number of ions of opposite charge that surround the ion in a crystal

octet rule

in forming compounds, atoms tend to achieve the electron configuration of a noble gas

alloys

mixtures composed of two or more elements, at least one of which is a metal

chemical formula

shows the kinds and numbers of atoms in the smallest representative unit of a substance

formula unit

the lowest whole-number ratio of ions in an ionic compound

ionic compounds

compounds composed of cations and anions