1. What is a covalent bond?
- a shared pair of electrons
- the electrostatic attraction between ions with the same charge
- the electrostatic attraction between two oppositely charged ions
- 1 shared electron
1 of 10
Other questions in this quiz
2. What affects ionisation energy?
- the shape and size of an atom
- nuclear charge, distance from nucleus and sheilding
- only nuclear charge
- distance from the nucleus, shielding and intermolecular forces
3. What is the definition of the first ionisation energy?
- a high attraction between the electron and the nucleus
- the ability to remove all the electrons from the outer shell in an exothermic process
- the energy needed to remove 1 electron from each atom in 1 mole of gaseous atoms to form one mole of gaseous 1+ ions.
- the energy needed to remove 1 electron from each ion in 1 mole of gaseous 1+ ions to form one mole of gaseous 2+ ions.
4. How do the delocalised electrons in metallic bonding effect the melting point?
- They make the melting point lower because it stops the positive ions being attracted togther
- They make the bonding between atoms weaker
- The more electrons there are, the stronger the bonding will be and the higher the meling point because the positive metal ions will have more electrons to be attracted to
- Because the shared pair of electrons create a strong intermolecular force
5. What is the equation for the second ionisation of oxygen?
- O2- (g) -> O2+ (g) + H2O
- O+ (g) -> O2+ (g) + e-
- O2+ (g) -> O3+ (g) + e-
- O+ (l) -> O2+ (g) + e- (s)