Chemical bonding definitions Flashcards
(13 cards)
Ionic bonding
An ionic bond is the electrostatic attraction between oppositely charged ions.
Covalent bond
A bond formed by a shared pair of electrons
Lone pair
A pair of electrons in the outer shell not used in bonding is called a lone pair.
Metallic bonding
Electrostatic attraction between cations and a ‘sea’ of delocalised electrons.
malleable
Can be beaten into sheets
ductile
Can be drawn into a wire
Alloy
mixture of metals
Giant lattices of atoms
Atoms joined together covalently in a regular repeating structure with no absolute size.
allotropes
Different solid structures of the same element.
Giant covalent lattice
A three-dimensional structure of atoms,bonded together by strong covalent bonds.
Giant ionic lattice
A three-dimensional structure of oppositely charged ions, bonded together by strong ionic bonds.
Giant metallic lattice
A three-dimensional structure of positive ions and delocalised electrons, bonded together by strong metallic bonds.
Simple molecular lattice
A three-dimensional structure of molecules,bonded together by weak intermolecular forces.