Hydrogen
2.1
Lithium
1.0
Hafnium
1.3
Sodium
0.9
Carbon
2.5
Oxygen
3.5
Nitrogen
3.0
Xenon
2.5
Helium
None
Uranium
1.7
Francium
0.7
Potassium
0.2
Molybdenum
1.8
Tungsten
1.7
Zirconium
1.4
Cadmium
1.7
Praseodymium
1.1
Thorium
1.3
Phosphorus
2.1
Vanadium
1.6
Calcium
1.0
Rubidium
0.2
Caesium
0.9
Polonium
2.0