Kelvin--The kelvin, unit of thermodynamic temperature, is the fraction 1/273. 16 of the thermodynamic temperature of the triple point of water(13th CGPM, 1967) Mole-The mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon-12. When the mole is used, the elementary entities must be specified and may be atoms, molecules, ions, electrons, or other particles, or specified groups of such particles(14th GPM,1971) Examples of the use of the mole I mol of H, contains about 6.022 x 1023 H, molecules, or 12.044 X 1023 H atoms I mol of HgCl has a mass of 236.04 g I mol of Hg2, has a mass of 472.08 g I mol of Hg 2* has a mass of 401.18 g and a charge of 192.97 kC I mol of Feo.g S has a mass of 82.88 g I mol of e- has a mass of 548.60 ug and a charge of-9649 kC I mol of photons whose frequency is 10 4 Hz has energy of about 39.90 kJ Candela-The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540 x 10 hertz and that has a radiant intensity in that direction of(1/683)watt per steradian(16th CGPM, 1979) Names and Symbols for the Si Base Units Name of si unit Symbol for SI unit meter kilogram thermodynamic temperature amount of substance mole mol luminous intensity candela SI Derived Units with Special Names and Symbols SI unit terms of si base units Hz s-1 Nm- energy, work, heat N m mkg s-i power, radiant flux mike s-3 ectric charge coulomb electric potential, mikaSA- electromotive force electric resistance hm mikaSa- ectric conductance m-kgs'A CV-l mgsa tesla V s- =kgsA Wb mksa- H V A-s sI sorbed dose(of radiation) gray dose equivalent evert (dose equivalent inde e 2000 by CRC Press LLC© 2000 by CRC Press LLC Kelvin—The kelvin, unit of thermodynamic temperature, is the fraction 1/273.16 of the thermodynamic temperature of the triple point of water (13th CGPM, 1967). Mole—The mole is the amount of substance of a system which contains as many elementary entities as there are atoms in 0.012 kilogram of carbon-12. When the mole is used, the elementary entities must be specified and may be atoms, molecules, ions, electrons, or other particles, or specified groups of such particles (14th CGPM, 1971). Examples of the use of the mole: 1 mol of H2 contains about 6.022 ¥ 1023 H2 molecules, or 12.044 ¥ 1023 H atoms 1 mol of HgCl has a mass of 236.04 g 1 mol of Hg2Cl2 has a mass of 472.08 g 1 mol of Hg2 2+ has a mass of 401.18 g and a charge of 192.97 kC 1 mol of Fe0.91S has a mass of 82.88 g 1 mol of e– has a mass of 548.60 mg and a charge of –96.49 kC 1 mol of photons whose frequency is 1014 Hz has energy of about 39.90 kJ Candela—The candela is the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540 ¥ 1012 hertz and that has a radiant intensity in that direction of (1/683) watt per steradian (16th CGPM, 1979). Names and Symbols for the SI Base Units SI Derived Units with Special Names and Symbols Physical quantity Name of SI unit Symbol for SI unit length meter m mass kilogram kg time second s electric current ampere A thermodynamic temperature kelvin K amount of substance mole mol luminous intensity candela cd Name of Symbol for Expression in Physical quantity SI unit SI unit terms of SI base units frequency1 hertz Hz s–1 force newton N m kg s–2 pressure, stress pascal Pa N m–2 =m–1 kg s–2 energy, work, heat joule J N m = m2 kg s–2 power, radiant flux watt W J s–1 = m2 kg s–3 electric charge coulomb C A s electric potential, volt V J C–1 = m2 kg s–3 A–1 electromotive force electric resistance ohm W V A–1 = m2 kg s–3 A–2 electric conductance siemens S W–1 = m–2 kg–1 s3 A2 electric capacitance farad F C V–1 = m–2 kg–1 s4 A2 magnetic flux density tesla T V s m–2 = kg s–2 A–1 magnetic flux weber Wb V s = m2 kg s–2 A–1 inductance henry H V A–1 s = m2 kg s–2 A–2 Celsius temperature2 degree Celsius °C K luminous flux lumen lm cd sr illuminance lux lx cd sr m–2 activity (radioactive) becquerel Bq s–1 absorbed dose (of radiation) gray Gy J kg–1 = m2 s–2 dose equivalent sievert Sv J kg–1 = m2 s–2 (dose equivalent index)