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