Work functions (φ) for selected metals

metal φ [eV] potassium 2.30 calcium 2.90 magnesium 3.68 aluminum 4.08 zinc 4.30 iron 4.50 copper 4.70 nickel 5.01 gold 5.10 platinum 6.35

Conversion among energy units joule kJ/mol eV au

joule= 1 6.0221E+20 6.2415E+18 2.2937E+17 kJ/mol= 1.6605E-21 1 0.010364 3.8088E-04 eV= 1.6022E-19 96.485 1 0.036749 au= 4.3597E-18 2625.5 27.2114 1

Short List of Common Constants given to 5 sig figs:

a0 Bohr Radius 5.2918E-11 m

e proton charge 1.6022E-19 C

h Planck's Constant 6.6261E-34 J.s

ħ = h/2π 1.0546E-34 J.s

NA Avogadro's number 6.0221E+23

c speed of light 2.9979E+08 m/s

k Boltzmann's constant 1.3807E-23 J/K

k Boltzmann's constant 0.69504 cm-1/K

me electron mass 9.1094E-31 kg

4πεo 1.1127E-10 C2/J·m