metallic bonding Flashcards
what structure do metals consist of?
giant lattice
where are the strong forces of electrostatic attraction?
between the positive metal ions and negative delocalised electrons
where are the delocalised electrons?
the electrons on the outer shell of the metal atoms
what produces the properties of metals?
delocalised electrons
why do metals have high boiling points?
the electrostatic forces between the metal atoms and the delocalised sea of electrons are very strong so needs lots of energy to be broken
what state are metals at room temp?
solid
why are metals good conductors?
they contain a see of delocalised electrons which carry charge and heat through the structure
why are metals malleable?
they have layers which can slide over each other
alloys
a mixture of two or more metals, or a metal and another element
why are alloys harder than normal metals?
the atoms are different sizes so they have distorted layers, meaning layers slide over each other less easily
what is metallic bonding?
forces of attraction between delocalised electrons and nuclei of metal ions
what holds the atom together?
forces of attraction between positive ions and electrons
