metallic bonding Flashcards
a metal is what structure
giant lattice
why are metals positively charged ions
they lose the electron on their outer shell and become positively charged ions
how are the electrons in a metal
delocalised or free
ionic bonding have a ____ electrostatic attraction between :
STRONG
positive metal ions and negative delocalised electrons
NEED TO KNOW HOW TO DRAW THE STRUCTURE
Think of delocalised electrons and a giant lattice structure
Properties of metals
- conduct electricity
- high melting and boiling points
- malleable and ductile
can metals conduct electricity
yes
why can metals conduct electricity
they have a sea of delocalised electrons which are free to move through the structure and carry a charge
when an electron enters one side of the metal, what does it cause the delocalised electrons to do
to displace itself from the other end, and they flow which is why electricity is conducted
why do metals have high melting and boiling points
there are strong attractions between the positive metal ions and the negative electrons and a lot of energy is needed to break those bonds
do metals have high melting and boiling points
YES
if aa force is applied on a pure metal
the layers slide over one another
