Bonds Flashcards
1
Q
Ionic Bonding
A
Strong electorate attraction between positive and negative ions
2
Q
Covalent bonds
A
Electrostatic attraction between a shared pair of electrons and the nuclei of bonded atoms
3
Q
Metallic Bond
A
Strong electrostatic attraction between positive metal ions and delocalised electrons
4
Q
Delocalised Electrons
A
Electrons from outer shell of metal atom, but not fixed to a particular atom so can move freely throughout structure
5
Q
Melting points decrease
A
Atom gets larger
Has more electrons and more electron shells. Means more shielding between nucleus and delocalised electrons
Electrostatic forcé between them weakens
6
Q
Melting points increase in groups
A
G1 has lower than G2 as G2 has more delocalised electrons
G2 has 2 while G1 has 1
