Chapter 8 Covalent Bonds
Structural formula
Chemical formula that shows the arrangement of atoms in molecules and polyatomic ions
Which of the following is the weakest
Dipole interaction
Chlorine is a gas, bromine is a liquid, & iodine is a solid because of differences in the strength of their
Dispersion forces
A molecule with a single covalent bond is
F2
Hydrogen bond
Force that occurs when a hydrogen atom that is covalently bonded to a very electronegative atom is also weekly bonded to an unshared pair of electrons in the same or a nearby molecule
Which of the following does not exist as a diatomic molecule?
He (helium)
Despersion force
Interaction caused by the motion of electron
Which of these compounds would not have covalent bonds
K2O
Which one of the following compounds is not covalent?
KCL
Which of the following compounds is not ionic?
CO2
A diatomic molecule with a triple covalent bond is
N2•
Which of the following molecules has one lone pair of electrons
NH3
Describe a network solid and give 2 examples
Network solids are substances in which all of the atoms are covalently bonded to each other. Samples of the substances are considered single molecules. Examples are diamonds and silicon carbide
Molecular formula
Shows a kinds and numbers present in a molecule of a compound
Network solid
Substance in which all of the atoms are covalently bonded to each other
The carbon tetra chloride molecule is
Tetrahedral
A covalent bond forms
When atoms share electrons
How many valence electrons does an atom of any halogen have?
7
Coordinate covalent bond
A covalent bond between two atoms in which the shared electron pair comes from only one of the atoms
Polar bond
A covalent bond between two atoms of different electronegatives in which the bonding electrons are not shared equally
Triple covalent bond
A covalent bond in which three pairs of electrons are shared by two bonded atoms
Non polar covalent bond
A covalent bond involving two pairs of electrons; each atom donates one pair of electrons to the bond
When H+ forms a bond with H2O form hydronium ion H3O+ this bond is called a coordinate covalent bond because
Both bonding electrons come from the oxygen atom
If a bonding pair of electrons is unequally shared between two atoms the bond is
Polar covalent
