lattice energy

Question 1

what is first electron affinity

Answer 1

energy change to add 1 electron to each of 1 mole of gaseous atoms of an element

Question 2

what is enthalpy change of atomisation

Answer 2

enthalpy change to form 1 mole of gaseous single atoms of an element from its standard state

Question 3

what is enthalpy change of solution

Answer 3

enthalpy change to dissolve 1 mole of an ionic solid in water (to form an infinitely dilute solution)

Question 4

what is enthalpy change of hydration

Answer 4

enthalpy change to completely hydrate 1 mole of gaseous ions (to form 1 mole of aqueous ions)

Question 5

what is lattice energy

Answer 5

energy change when 1 mole of ionic solid is formed from its gaseous ions

Question 6

how to increase polarising power of a cation

Answer 6

decrease radius, increase charge

Question 7

how to increase polarisability of an anion

Answer 7

increase radius, increase charge

Question 8

how to increase an ionic solid’s lattice energy

Answer 8

decrease ionic radii, increase ionic charges; for stronger ionic bonding

Question 9

how to increase an ion’s enthalpy change of hydration

Answer 9

decrease radius, increase charge; for stronger attraction to water