covalent bonds
molecular compounds
bonding theories
polar bonds
poturri
100
what is a single covalent bond?
Two atoms held together by sharing one pair of electrons are joined
100
what are the the diatomic atoms?
list them
H O F N Br Cl
100
what is a sigma bond?
two atomic orbitals combine to form a molecular orbital that is symmetrical around the axis connecting two atomic nuclei
100
what are van der waals forces?
dipole interactions and dispersion forces
100
what are dispersion forces?
are caused by the motion of electrons
200
Give an example of a structural formula
H-H
200
What is a covalent bond?
Atoms that are together by sharing electrons are joined
200
what is a pi bond?
the side by side overlap of atomic p orbitals
200
what is the difference between polar covalent and nonpolar covalent
When the atoms in the bond pull equally- nonpolar
Polar covalent bonds known as polar bond is a covalent bond between atoms in which the electrons are shared unequally
200
what are dipole interactions
polar molecules are attracted to one another
- The electrical attraction occurs between the oppositely charged regions of polar molecules
300
How many pairs of electrons are shared in a triple bond?
3
300
name the different representing models
molecular
structural
space filling
perspective
ball and stick
300
What type of bonds does a triple bond have
one sigma and two pi
300
explain bond polarity
bonding pairs of electrons in covalent bonds are pulled between the nuclei of the atoms sharing the electrons
Nuclei of atoms pull on the shared electrons, much as the knot in the rope is pulled toward opposing side in a tug of war
300
What type of bonding is the strongest?
ionic bonding
400
what is a coordinate covalent bond?
covalent bond in which one atom contributes both bonding electrons
400
Does molecular compounds have high or low melting points?
low
400
repulsion between electrons pairs causes molecular shapes to adjust so that the valence electrons pairs stay as far apart as possible
VSEPR theory
400
what is a network solid?
solids in which all of the atoms are covalently bonded to each other
400
what is the difference between intermolecular forces and intramolecular forces
500
What are some exceptions to the octet rules?
odd number of total electrons
even number of VE
500
Which type of compound has a formula unit
ionic
500
Explain what shape does a water molecule have and why does it have that shape
the two bonding pairs and the two unshared pairs of electrons from a tetrahedral arrangement around the central oxygen
- The water molecule is bent
With two unshared pairs repelling the bonding pairs, the H—O—H bond angle is compressed to about 105°
500
What bond type will F and P form?
very polar covalent
500
name the different shapes that an atom can have according to vsper theory
linear, trigonal planar, bent, pyramidal, tetrahedral, trigonal bipyramidal, and octahedral