Chemistry- ionic, metallic,covaleny bonding Flashcards
what is an ion
e negatively or positevely charged atom
Why do atoms form ions?
to achieve a stable electronic configuration
what do non metals form?
negative ions
metals form
positive ions
Definition of Ionic Bonding
occurs in compounds from metals combined with non metals
EXTRA
We can show how the electrons of a metal go to a non metal by using a cross and dot diagram
what do metals form
positive ions
in metllic bonding are there delocalised electrons
yes and are able to flow around
definiton of metallic bonding:
its the force of attraction between the positive metal ions and the sea of electrons that form a giant mwtallic structure
when does covalent bonding occur?
occurs between two or more non metal atoms that share pairs of electrons in order to achive a stable electronic configuration
in ionic substances can they conduct electricity ?
yes molten or in a solution
describe the boiling and melting point of ionic substances
high melting and boiling point
what do ionic substances form?
crysalline structures
what structure do ionic subtances have
giant ionic lattice
describe pattern of ionic subtances
regular repeating pattern of oppositely charged ions