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Ch. 4 Chemistry Notes


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What is the Octet Rule?
reacting atoms will gain or lose electrons to resemble the electronic configuration of noble gases
Do metals in the octet rule gain or lose electrons?
Do nonmetals in the octet rule gain or lose electrons?
What are simple ions?
atoms with a net positive or negative charge due to a loss or gain of electrons
What is an electrovalence?
the charge on an ion
What is an Ionic Bond?
an attraction between oppositley charge atoms
What is isoelectronic?
same electronic configuration
What are binary compounds?
contains just two types of atoms
What are the two rules for naming a compound?
-Metallic elements first
-Nonmetallic elements second with suffix -ide
What is ionic?
Attraction between oppositley charged atoms
-Metal + Nonmetal
What is covalent?
Nonmetal + Nonmetal
What is covalent bonding?
bonding where atoms can share Outershell electrons to satisfy octet rule.
what is an electronic dot formula?
also called Lewis structure; Outershell electrons are represented by dots.
What is the def. for poyatomic ions?
covalently bonded atoms that carry a net charge.
What is resonance?
when a polyatomic ion or molecule can be represented by two or more equivalent structural formulas
what is the name of the theory that predicts the molecular shapes based on mutual repulsion or e- pairs?
VSEPR theory
What is nonpolar covalent bonds?
the bonding pair of electrons is shared equally
Example: Cl-Cl, O=O, H-H
what is polar covalent bonds?
the bonding pair of electrons is shared unequally
Example: H-Br, C-O, H-O-H

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