Molecular Compounds
What shows how many atoms of each element a substance contains
Molecular Formula
When two atoms are likely to form a double bond or a triple bond?
double bond
When is an atomic orbital used?
When there is one particular atom
What is occurred when polar molecules are attracted to one another?
Dipole interactions
Atoms that are held together by sharing electrons that are joined is....
Covalent bond
Which compounds have a lower melting and boiling points? Molecular or ionic?
Molecular
In covalent bonds, what type of sharing is used so that the atoms attain the configuration?
electron sharing
What kind of bond is formed in acetylene? (C2H2)
A triple bond
When a electronegative atom attracts electrons more strongly what kind of charge is gained?
Negative charge
A par of valence electrons that is not shared between atoms is...
unshared pair
For an molecular compound the representative unit is...
formula unit
How do you show coordinate covalent bonds?
Arrows that point from the atom donating the pair of electrons to the atom receiving them
What does orbital hybridization provide
both molecular bonding and molecular shape
Which is the weakest of all molecular interactions?
Dispersion
A tightly bond group of atoms hat has a positive or negative charge and behaves as a unit is...
polyatomic ion
What is the molecular formula for butane
C4H10
What kind of bond is it where the shared electron pair comes from one of the bonding atoms?
Coordinate covalent bond
What is used to explain the three-dimensional shape of molecules?
VSEPR theory
Which bond is the weakest? Intermolecular, ionic, or covalent?
Intermolecular
what energy s required to break the bond between two covalently bonded atoms?
bond dissociation energy
For an ionic compound, the representative unit is...
Formula Unit
Why do we use resonance structures?
envision the bonding in molecules that can not be adequately described by a single structural formula
What shape is formed with a carbon dioxide molecule and a water molecule
linear and bent
What are the two weakest attractions between molecules and collectively called?
Van der Waals forces
bonding electrons are most likely to be found in sausage-shaped region above and below the bond axis of the bonded atoms.
pi bond