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Bonds/IMF
Molecular Shapes
Molecular Shapes II
Vocab
?
100
Electrons are shared to reach an octet
Covalent bonds
100
Molecular shape that has 2 bond pairs and no lone pairs
Linear
100
The shape of H2O
Bent
100
A positively charged ion made when an atom loses one or more valence electron
Cation
100
As a trend, decreases from left to right across the periodic table
Ionization energy / Electron affinity
200
The positive end of one molecule is attracted to the negative end of another
Dipole-dipole
200
2 bond pairs and 2 lone pairs
Bent
200
The shape of CO2
Linear
200
The electrons in the highest occupied energy level of an atom
Valence electrons
200
Decreases from top to bottom down the periodic table
Atomic radius
300
Electrons are transferred to reach an octet
Ionic bond
300
3 bond pairs and no lone pairs
Trigonal planar
300
The shape of CH4
Tetrehedral
300
An expression that indicates the number and type of atoms present in the smallest representative unit of a substance
Chemical formula
300
Increases bottom to top on the periodic table
Ionization energy / Electron affinity
400
Occurs between molecules that have H bonded to N, O, or F
Hydrogen bond
400
Four bond pairs and no lone pairs
Tetrahedral
400
The shape of NH3
Pyramidal
400
The abbreviation is VSEPR
Valence Shell Electron Pair Repulsion
400
Exceptions when making a Lewis dot diagram
Hydrogen, lithium, and the boron family
500
Movement of electrons cause one molecule to become temporarily polar and cause other molecules to turn polar
van der Waals
500
Three bond pairs and one lone pair
Pyramidal
500
The shape of CH2O
Trigonal Planar
500
One or more equally valid electron dot structures for a molecule
Resonance structures
500
Diatomic molecules

Br, I, N, Cl, H, O, F