Bonding - ionic, covalent and metallic Flashcards
1
Q
what is ionic bonding?
A
electrostatic attraction between oppositely charged ions
2
Q
what are the three properties of ionic molecules?
A
- conduct electricity
- high melting points
- tend to dissolve in water - water molecules (polar) pull the ions away from the lattice
3
Q
what is covalent bonding ?
A
when atoms share a pair of electrons to gain a full outer shell
4
Q
what is a covalent bond?
A
a shared pair of electrons
5
Q
what is coordinate bonding?
A
when shared lone pairs of electrons come from one bonding atom , and the second atom has a vacant orbital
6
Q
what is metallic bonding?
A
the electrostatic forces of attraction between the nucleus and delocalised electron.
7
Q
what are the foyr proeprties of metallic bonding?
A
insoluble, high melting/boiling points, malleable and they conduct electricity
8
Q
what two factors affect the strength of metallic bonding?
A
the size of metal ions and the charge of metal ions
