Question

Write notes on hunds rule ,lattice energy, Diborance

Answer 1

Explanation:

For NaCl, the lattice dissociation enthalpy is +787 kJ mol-1. You should talk about "lattice formation enthalpy" if you want to talk about the amount of energy released when a lattice is formed from its scattered gaseous ions. For NaCl, the lattice formation enthalpy is -787 kJ mol-1.

...