3a.1 nature of ionic bonding

Question 1

what is ionic bonding

Answer 1

the electrostatic attraction between oppositely charged ions

Question 2

what are the ionic properties

Answer 2

good conductor: ionic compounds are well-conducted of heat and electricity because it has free ions that can carry the energy and electrical charge (only in molten and aq since the ions are held together when a solid)

brittle: the ionic stricter is made of many ions (negative and positive) now when stress is applied to the shape the ions would start changing their positioning, when two ions of the same charge meet the repel each other
lattice: it has this property because the electrostatic attractions between the oppositely charged ions are stronger than the repulsion of ions with the same charge
solubility: the energy required to break the latice structure and separate the latice ions comes from hydration of the separated ions produced. both the negative an positive ions in the lattice is attracted to the water molecules because of the polarity the water molecules produce

Question 3

how do you find out the strength of ionic bonding

Answer 3

by calculating the amount of energy required in one mole of solid to separate the ions to infinity (in the gas phase)

Question 4

what are the two factors that would increase the ionic bond

Answer 4

1. a smaller ion (radius)

2. a higher charge

Question 5

who can you prove the existence of ions

Answer 5

1. by electrolysis
2. by running a direct current (for example) Copper (II) chromate from the ions Cu2+ with the colour blue and CrO4^-2 with the colour yellow, since Cu ions are positive we would see a blue colour around the negative terminal and we would see a yellow colour on the positive terminal
3. the electron density map