Ionic bond
formed between oppositely charged ions
any bond between a metal and a nonmetal must be an ionic bond.
>1.6 Electronegativity
octet rule
that atoms tend to gain or lose (or share) electrons so as to achieve eight electrons in their outer shell
Ionic bonds characteristics
high melting points and boiling points
hard and brittle crystalline lattice
Do not conduct an electric current in the solid state since the ions cannot move under these conditions,
Solutions of or molten state readily conduct electricity since the ions separate
Non metal ionic elements
Gain electrons - outer shell
, Metallic ionic elements
Lose electrons - outer shell
covalent bond
a bond formed when atoms share one or more pairs of electrons
polar covalent
unequal sharing of electrons by nonmetal elements when electronegativities are
1.6 to 0.5
nonpolar covalent bond
A type of covalent bond in which electrons are shared equally between two atoms of similar electronegativity
electronegativity difference is less than 0.5
electronegativity prediction
Subtract the lowest Electronegativity from the highest Electronegativity
Cesium (Cs)
formed between oppositely charged ions
any bond between a metal and a nonmetal must be an ionic bond.
>1.6 Electronegativity
octet rule
that atoms tend to gain or lose (or share) electrons so as to achieve eight electrons in their outer shell
Ionic bonds characteristics
high melting points and boiling points
hard and brittle crystalline lattice
Do not conduct an electric current in the solid state since the ions cannot move under these conditions,
Solutions of or molten state readily conduct electricity since the ions separate
Non metal ionic elements
Gain electrons - outer shell
, Metallic ionic elements
Lose electrons - outer shell
covalent bond
a bond formed when atoms share one or more pairs of electrons
polar covalent
unequal sharing of electrons by nonmetal elements when electronegativities are
1.6 to 0.5
nonpolar covalent bond
A type of covalent bond in which electrons are shared equally between two atoms of similar electronegativity
electronegativity difference is less than 0.5
electronegativity prediction
Subtract the lowest Electronegativity from the highest Electronegativity
Cesium (Cs)
