POTPOURRI
COVALENT NAMING
COVALENT FORMULAS
LEWIS
100

The kind of bond that holds together molecules.

COVALENT

100

N2O4

dinitrogen tetroxide

100

dinitrogen pentoxide

N2O5

100

The number of unshared pairs on an atom of nitrogen.

ONE

200

A polar covalent bond must have an electronegative difference between 2.1 and this number.

0.5

200

CCl4

carbon tetrachloride

200

nitrogen trifluoride

NF3

200

The number of total valence electrons in NH4+.

EIGHT

300

A compound with a very high electronegativity difference would be formed of this kind of bond.

IONIC

300

CO

carbon monoxide
300

sulfur hexafluoride

SF6

300

The number of double bonds present in a molecule of CO2.

TWO

400

An electron dot configuration is called this.

LEWIS STRUCTURE

400

NH3

nitrogen trihydride

400

carbon dioxide

CO2

400

The type of compounds that require you to add or subtract electrons from the usual valence count.

POLYATOMIC IONS

500

A model in chemistry used to predict the shape of individual molecules based upon valence shell electron pair repulsion.

VSEPR

500

C2H6

dicarbon hexahydride

500

tetraphosphorus decoxide

P4O10

500

The total number of unshared pairs on a carbon atom.

ZERO

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