It is shown that atomic space between atomic and ionic radii may be divided on the ready exchange-fluctuation cells Kλ/z, where K is nearest neighbors, λ = h/mc, z is valence. On this basis values of vector Fermi is established for 21 metals using model 1/ kF
in proportion Kλ/z ± nλ ( where n is 0,1,2,3) in limits approximate of value λ = photon + electron. It is shown also a calculation of the thermal blurring kF
(potential permit) and it’s a connect with high temperature phase transformation bcc ↔ hcp in such limits n λ.