To calculate ion distance in a 1D lattice, it's essential to clarify the problem by providing an attempted solution. The discussion emphasizes the importance of considering only nearest neighbor interactions due to the rapid drop-off of repulsive potential compared to attractive forces. It suggests referencing introductory solid-state physics texts, such as Kittel's, for foundational concepts. Additionally, the dimensionality of the lattice should be specified, with a recommendation to start with the simplest case. Clear definitions and assumptions are crucial for accurate calculations.