chem 305 ch 4 terms

chemical bond

the attractive force that holds 2 or more atoms together forming a more complex unit

Ionic compounds

as having ionic bonds

molecular compound

as having covalent bonds

ionic bond

chemical bond formed via the transfer of one or more electrons from one atom to another

covalent bond

a chemical bond formed via the sharing of one or more electrons between two atoms

valence electron

an electron in the outermost electron shell of a representative element or noble gas element

lewis symbol

chem symbol of an element surrounded by dots that represent the number of valence electrons present

octet rule

in forming compound atoms of elements lose, gain, or share electrons in such a manner that gives them a full octet

ion

atom(s) that are electrically charged - or + as a result of a gain or loss of electrons

lewis structure

a combination of lewis symbols that show either a transfer or sharing of an electron in chemical bonds

formula unit

the smallest whole number repeating ratio of ions present in an ionic compound that results in charge neutrality

binary compound

compound made up of only two elements

binary ionic compounds

ionic compounds made up of one type of metal element and one type of non-metal element

monatomic ion

formed by a single atom losing or gaining electrons

polyatomic ion

formed when a group of atoms loses or gains electrons