Table 2.

Comparative properties between hydrogen and fluorine.

Parameter	1H	19F
Natural abundance (%)	99.98	100
Spin	1/2	1/2
Gyromagnetic ratio (γ) in MHz/T	42.576	40.076
Relative sensitivity	1.0	0.834
Van de Waals’ radius (in Å)	1.2 (H–C)	1.35 (F–C)
The population ratio (NE/NG)	0.9999802	0.9999814
∆ϵ/kT at 3T	1.98 × 10−5	1.86 × 10−5
Lattice spacing	4.97 Å (Hydrocarbon)	5.9 Å (fluorocarbon)
Chemical shifts in ppm (NMR)	0 to 15	>350