Primary Bonding (Intramolecular) Flashcards
What structure does a metallic bond have?
Continuous lattice
What type of structure does covalent have?
Continuous lattice and molecular
What type of structure does ionic have?
Continuous lattice
What occurs to the valence electrons in a metal atom?
They are loosely held due to low electronegativity
Describe a metallic bond.
Positive metal ions surrounded by a ‘sea’ of delocalised electrons, the bond occurs due to the electrostatic attraction between these two
What does an ionic bond consist of?
Metal and non-metal ions
How are ionic bonds formed?
When electrons are transferred from metal to non-metal atoms, there is strong electrostatic attraction between oppositely charged ions
What atoms are involved in covalent bonding?
Non-metal atoms
How does a covalent bond occur?
Electrostatic attraction between shared pair of electrons and positive nuclei of atoms involved
Which are stronger, lattice or molecular structures?
Lattice, as they have strong bonding throughout
Why do molecular substances have low mpt/bpt?
They have weaker secondary interactions between molecules, requires less E to disrupt
Why can metals conduct electricity?
Delocalised electrons allow the electrical currents to pass through
Why can’t ionic bonds conduct electricity?
Ions are fixed in place. However, when molten or in solution, ions can move, allow electrical currents to pass
Why can’t covalent substances conduct electricity?
Electrons are strongly held in covalent bonds
Which covalent element can conduct electricity and why?
Graphite, due to its structure
