Chemical Bonding

Question 1

what is an ionic bond?

Answer 1

Electrostatic attraction between oppositely charged ions

Question 2

what is a metallic bond?

Answer 2

Electrostatic attraction between a lattice of positive ions and delocalised electrons

Question 3

what is a covalent bond?

Answer 3

Electrostatic attraction between a shared pair of electrons and positively charged nuclei

Question 4

what is a dative bond? (co-ordinate bond)

Answer 4

One atom donates a lone pair of electrons for sharing to another electron deficient atom

Question 5

what is an instantaneous dipole - induced dipole attraction?

Answer 5

Temporary weak intermolecular forces of attraction between the two molecules with opposite partial charges

Question 6

what is a permanent dipole - permanent dipole attraction?

Answer 6

Weak intermolecular forces due to the non-symmetrical distribution of electrons within the molecule as the atoms have different electronegativity

Question 7

what is a hydrogen bond?

Answer 7

Electrostatic force of attraction between a hydrogen atom covalently bonded to a highly electronegative atom (F, O or N) and the lone pair of electrons of another highly electronegative atom (F, O or N)

Question 8

what is bond energy?

Answer 8

The energy required to break 1 mole of a covalent bond between 2 atoms in the gaseous state

Question 9

what is bond length?

Answer 9

The distance betweexn the nuclei of the two bonded atoms when their atomic orbitals overlap to form molecular orbitals