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Octet Rule

states that atoms tend to lose, gain, or shared electrons in order to have a full set of valence electrons

What are atoms with a full set of valence electrons called?

the noble gases

What was one way to emphasize an atom's valence electrons?

lewis dot diagram

monatomic ions

"one atom"

polyatomic ion

ion made up of more than one atom

ionic compound

compound made up of ions


positively charges ion


negatively charged ion

binary ionic compounds

compounds composed of two different elements


atom that has a positive or negative charge

empirical formula

to denote the ratio of ions in a compound

ionic bond

Formed when one or more electrons are transferred from one atom to another

covalent bonding

formed by a shared pair of electrons between two atoms


a group of atoms that are held by covalent bonds

molecular substance

substance that is made of molecules

molecular formula

to describe the composition of a molecular compound

molecular formula 2

tells how many atoms are in a single molecule of the compound

structural formula

specifies which atoms are bonded to each other in a molecule

double covalent bonds

consist of two pairs of shared electrons


a covalent bond in which electrons are shared equally

polar covalent

Electrons are shared unequally

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