Bonding , Structure & intermolecular forces Flashcards
What’s metallic bonding ?
Strong electrostatic attraction between positive metal ions a sea of delocalised electrons
What’s the structure of a giant metallic lattice ?
Regular repeating layered structure
Why do giant metallic lattice have a high melting point ?
Because there is a strong electrostatic attraction between the positive metal ions and the sea of delocalised electrons
Why are giant metallic lattice is good electrical conductors?
Because the Delocalised electrons are free to move through the lattice and carry an electrical charge
What does malleable refer to ?
Can be bent into shape
What does ductile refer to ?
Can be pulled into wires
What is ionic bonding ?
Strong electrostatic attraction between positive and negative ions in a compound
Why do ionic compounds have high melting points?
Because there is a strong electrostatic attraction between positive metal ions and the negative non-metal ions
What is covalent bonding?
Electrostatic attraction between the shared pair of negative electrons and the positive nucleus of an atom is that Is bonded together
What is dative covalent bonding ?
Where both of shared pair of electrons come from the same atom
What are the four giant covalent structures?
Diamond, graphite, silicon and silicon dioxide
What are the three intermolecular forces?
Hydrogen bonding, permanent dipole dipole, Van der waals forces
What is a strongest intermolecular force?
Hydrogen bonding
Between which molecules are hydrogen bonds found?
F-H, N-H or O-H
Between what molecules of permanent dipole dipole attraction is found?
H-F, H-CL, I-CL
Where are van der waals forces found?
Between all molecules
