Bonding

Question 1

Ionic bonding

Answer 1

electrostatic force of attraction between oppositely charged ions formed by electron transfer.

Question 2

Dative covalent bond

Answer 2

forms when the shared pair of electrons in the covalent bond come from only one of the bonding atoms

Question 3

Metallic bonding

Answer 3

the electrostatic force of attraction between the positive metal ions and the delocalised electrons

Question 4

factors that affect the strength of metallic bonding

Answer 4

1. Number of protons/ Strength of nuclear attraction.
2. Number of delocalised electrons per atom
3. Size of ion.

Question 5

symmetric molecule polar or non polar

Answer 5

will not be polar even if individual bonds within the molecular ARE polar.
-individual dipoles on the bonds ‘cancel out’ due to the symmetrical shape of the molecule. There is no NET dipole moment: the molecule is NON POLAR

Question 6

where are WdVs not present

Answer 6

ionic substances

Question 7

Permanent dipole-dipole forces

Answer 7

-occurs between polar molecules-asymmetrical