unit 6 or something molecular shapes and bonding Flashcards
ionic bonding
chemical bonding that results from the electrical attraction between cations and anions
covalent bonding
results from the sharing of electron pairs between two atoms
electronegativity
a measure of an atom’s ability to attract electrons
nonpolar covalent bond
a covalent bond in which the bonding electrons are shared equally by the bonded atoms
polar
having an uneven distribution of charge
polar covalent bond
a covalent bond in which the bonded atoms have an unequal attraction for the shared electrons
what is a molecule
a neutral group of atoms that are held together by covalent bonds
what are electron-dot structures used to represent?
the number of valence electrons
what is an unshared pair
a pair of electrons that is not involved in bonding and that belongs exclusively to one atom
what is another name for an unshared pair?
a lone pair
what is a double bond?
a covalent bond in which two pairs of electrons are shared between two atoms
what is resonance?
resonance refers to multiple ways to show a lewis structure bonding of molecules/ions.
how is the movement of electrons different what atoms are close to each other?
the electrons start orbiting around both of the atoms
how are covalent bonds formed?
when atoms are attracted to the other’s electrons, but neither one can take them away from the other.
what type of bond forms between two nonmetals
covalent bond
define VESPR Theory
Stands for valence shell electron pair repulsion theory. means that electron pairs will get as far away from one another as possible because electrons repel electrons.
what is bond length?
the difference between the attraction and repulsion of two covalently bonded atoms/the distance between the centers of two covalently bonded atoms
what electronegative values are nonpolar bonds
0.0->0.5
what electronegative values are polar bonds
0.6->1.7
what electronegative values are ionic bonds
1.7+
3.5-2.1, what type of bonds would this be?
polar
