Question

What is ionisation enthalpy and high lattice enthalpy?

Answer 1

Ionisation enthalpy is the energy required to remove an electron from gaseous atom…. smaller the atom higher is the energy required to remove electron as there is high force of attraction on the outermost in periodic table,from left to right size of atom decrease so IE increase, down the group size increase so IE decrease.
, the lattice enthalpy is the energyrequired to break apart an ionic solid and convert its component atoms into gaseous ions. ... A lot of energy is released as the oppositely charged ions interact. It is this that causes ionic solids to have such high melting and boiling points,