Bonding and Structure

Question 1

define ionic bonding

Answer 1

electrostatic attraction between positive and negative ions

Question 2

define a covalent bond

Answer 2

the strong electrostatic attraction between a shared pair of electrons and the nuclei of the bonded atoms

Question 3

what is a dative covalent bond?

Answer 3

a shared pair of electrons with the electrons being provided by one of the atoms (e.g. NH4+)

Question 4

what is average bond enthalpy?

Answer 4

the average enthalpy change which
takes place when breaking by homolytic fission one mole of a given
type of bond in the molecules of a gaseous species

Question 5

a dimer is ..

Answer 5

covalent

Question 6

define giant

Answer 6

continuous structure in 3D

Question 7

define metallic bonding

Answer 7

electrostatic attraction between positive metal ions and delocalised electrons

Question 8

why are metals insoluble in water?

Answer 8

too much energy is required to break the strong electrostatic forces

Question 9

define malleable

Answer 9

can easily be bent in to different shapes

Question 10

define ductile

Answer 10

can be drawn in to a wire