metallic bonding

Question 1

what is metallic bonding

Answer 1

regular arrangement of positve ions in a lattice next to each other with electrostatic forces of attraction between teh nuclui of these atoms and their delocalised electrons that are able to move within 3D lattice

Question 2

properties of metallic bonds

Answer 2

conductsd electricity
malleability abnd ductile
solid at room temperautre
high mp

Question 3

what does strenght of metallic bonds depend on

Answer 3

depends on the number of outer electrons donated to electron cloud and the size of teh metal atom/ion

the more the electrons that are donated into the electron cloud the stronger the metallic bond.
the bigger the atom the stronger the metallic bond

Question 4

why do metallic bonds conduct electricity

Answer 4

due to sea of delocalised electrons being mobile,. valenece electrons are free to move throughout the strucutre
electrons attracted to the positve end are replaced by the ones that entering trhough the negative end

Question 5

why are metallic bonds malleable and ductile

Answer 5

due to the bonds between metal ions and sea of delocalised electrons are non directional

individual metal ions can move in relation to each other without breaking the bonds between them and the electrons

Question 6

why are metallic bonds solid and room temperature

Answer 6

strong force of attraction holds the metal ions and sea of delocaised electron metallic lattice togetehr

as a result moderate to high temperatures are needed to disrupt the lattice and allow the metal to melt

Question 7

why do metallic bonds have a high melting point

Answer 7

Melting point is a measure of how easy it is to separate individual particles. In metals it is a measure of how strong the electron cloud holds the + ions.

separaton depends on size of atom and electron density of the cloud

melting point increases down and group and across a period