Covalent Bonding

Ionic Bond
Metal and nonmetal
Metallic Bond
Metal and metal
Covalent (molecular) Bond
Nonmetal and nonmenta
What happens to electrons in a covalent bond?
Electrons are shared
What is the Lewis Rule?
Atoms will share electrons to obtain the configuration of a noble gas
What is the bond angle of a trigonal planer?
120*
What is the bond angle of a bent shape?
105*
What is the bond angle of a pyramidal shape?
107*
What is the bond angle of a tetrahedral?
109.5*
What is the bond angle of a linear shape?
180*
What is the VSEPR Theory?
Atoms will try to be arranged as far apart as possible. Electrons will repel each other
What determines polarity of a molecule?
Shape and electronegative difference
What are intermolecular forces?
the forces between two molecules of a substance
What is a disperson?
a temporary dipole; weakest; gases; nonpolar
What is a dipole-dipole?
a permanent dipole; strong; polar liquids and gases
What is hydrogen bonding
strong permanent dipole; strongest; high boiling point liquids
What is the difference between molecular compounds and ionic compounds?
Lower melting and boiling points
Solids melting points often exceeding 300*C
Ionic Substances
A molecule where one end is slightly positive and the other end is slightly negative
Polar Molecule
A molecule where the electrons are all shared equally
non polar molecule
A substance in which all the atoms are covalently bonded to each other. An example is a diamond.
network solids
the strongest of the intermolecular forces
hydrogen bonds
A substance where the atoms share electrons to obtain an octet
covalent bond
A substance where the shared electron pair comes from one of the bonding atoms
coordinate covalent bond
The two weakest attractions between molecules are collectively called this
van der Waal forces
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