Which characteristics of metal atoms explain why valence electrons in a metal are delocalized?

In a metal, the electrons are considered free because there are more electrons than there should be and also transition metals are willing to accept and give up electrons from their d-orbitals. The d-orbital shell are in a relatively high energy state which means they are loosely bound to the atom where they can freely move around.

Okay well gravitational energy is matter forced by gravity making energy though the kinetic energy then the electric energy produces electricity from the kinetic energy and the kinetic energy gets its energy from the gravitational energy. was that the answer you wanted or something else?