418 Appendix ll.Tables of Physical Constants Physical Constants(SI and cgs units) Mass of electron (free electron mass;rest mass) m0=9.109×10-31(kg)=9.109×10-28(g) Charge of electron e=1.602×10-19(C) Velocity of light in vac. c=2.998×108(m/s)=2.998×1010(cm/s) Planck constant h=6.626×10-34(J·s) =6.626×10-27(g·cm21s)=4.136×10-15(eV·s) 九=1.054×10-34(J·s) =1.054×10-27(g·cm2s)=6.582×10-16(eV·s) Avogadro constant No=6.022 x 1023 (atoms/mol) Boltzmann constant kB=1.381×10-23(J/K) =1.381×10-16(ergK)=8.616×10-5(eV/K) Bohr magneton 4B=9.274×10-24(J/T)=A·m2=9.274×10-21(ergG) Gas constant R=8.314(J/mol·K)=1.986(cal/mol·K) Permittivity of empty space o=1/oc2=8.854×10-12(Fm)≡(A·s/V·m)=(NWA2) Permeability of empty space 0=4π×10-7=1.257×10-6(H/m)≡(V·s/A·m) Faraday constant F=9.648×104(C/mol) Useful Conversions 1(eV)=1.602×10-19(J)=1.602×10-12(g·cm2s2)=1.602×10-19(kg·m2s2) =3.829×10-20(cal)=23.04(Kcal/mol) 1(J)=1(kg·m2s2)=107(eg)=107(g·cm2/s2)=2.39×10-1(cal) 1(1/2cm)=9×1011(1/s) 1(1/m)=9×109(1/s) 1(C)=1(A·s)=1(J/W) 1(A)=10-10(m) 1(tor)=133.3(N/m2)≡133.3(Pa)=1(mmHg) 1(bar)=105(N/m2)≡105(Pa) 1(Pa)=1(N/m2)=1.45×10-4(psi) 1(psi)=6.895×103(Pa) 1(cal)=2.6118×1019(eV) 1(mm)(milli)=10-3(m) 1 km (Kilo)=103 m 1(um)(micro)=10-6(m) 1 Mm (Mega)=106 m 1(nm)(nano)=10-9(m) 1 Gm (Giga)=109 m 1(pm)(pico)=10-12(m) 1 Tm (Tera)=1012m 1(m)(femto)=10-15(m) 1 Pm (Peta)=1015 m 1(am)(atto)=10-18(m) 1 Em (Exa)=1018 mPhysical Constants (SI and cgs units) Mass of electron (free electron mass; rest mass) m0
9.109 1031 (kg)
9.109 1028 (g) Charge of electron e
1.602 1019 (C) Velocity of light in vac. c
2.998 108 (m/s)
2.998 1010 (cm/s) Planck constant h
6.626 1034 (J  s)
6.626 1027 (g  cm2/s)
4.136 1015 (eV  s) '
1.054 1034 (J  s)
1.054 1027 (g  cm2/s)
6.582 1016 (eV  s) Avogadro constant N0
6.022 1023 (atoms/mol) Boltzmann constant kB
1.381 1023 (J/K)
1.381 1016 (erg/K)
8.616 105 (eV/K) Bohr magneton B
9.274 1024 (J/T) A  m2
9.274 1021 (erg/G) Gas constant R
8.314 (J/mol  K)
1.986 (cal/mol  K) Permittivity of empty space 0
1/0c2
8.854 1012 (F/m) (A  s/V  m) (N/A2) Permeability of empty space 0
4 107
1.257 106 (H/m) (V  s/A  m) Faraday constant F
9.648 104 (C/mol) Useful Conversions 1 (eV)
1.602 1019 (J)
1.602 1012 (g  cm2/s2)
1.602 1019 (kg  m2/s2)
3.829 1020 (cal)
23.04 (Kcal/mol) 1 (J)
1 (kg  m2/s2)
107 (erg)
107 (g  cm2/s2)
2.39 101 (cal) 1 (1/#cm)
9 1011 (1/s) 1 (1/#m)
9 109 (1/s) 1 (C)
1 (A  s)
1 (J/V) 1 (Å)
1010 (m) 1 (torr)
133.3 (N/m2) 133.3 (Pa)
1 (mm Hg) 1 (bar)
105 (N/m2) 105 (Pa) 1 (Pa)
1 (N/m2)
1.45 104 (psi) 1 (psi)
6.895 103 (Pa) 1 (cal)
2.6118 1019 (eV) 1 (mm) (milli)
103 (m) 1 km (Kilo)
103 m 1 (m) (micro)
106 (m) 1 Mm (Mega)
106 m 1 (nm) (nano)
109 (m) 1 Gm (Giga)
109 m 1 (pm) (pico)
1012 (m) 1 Tm (Tera)
1012 m 1 (fm) (femto)
1015 (m) 1 Pm (Peta)
1015 m 1 (am) (atto)
1018 (m) 1 Em (Exa)
1018 m 418 Appendix II • Tables of Physical Constants