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OS/2 Shareware BBS: Science
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elements.ti
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1993-08-02
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2KB
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25 lines
symbol
number ## atomic number -- number of protons in the nucleus
weight ## atomic weight (based on isotope C12)
natural ## number of naturally occuring isotopes
isotopes ## number of all known isotopes
density ## specific gravity -- weight per unit volume (g/cm3)
melt ## melting point (C)
boil ## boiling point (C)
fusion ## latent heat of fusion -- amount of heat required to melt without raising the temperature (cal/g)
heat ## specific heat -- thermal capacity -- amount of heat required to raise a certain mass a certain temperature (cal/g/C)
expansion ## coefficient of linear thermal expansion -- ratio of change in length to original at 0 degrees C (10E-6 cm/cm/C)
thermal ## thermal caleries transferred between faces of a 1 cm3 cube under a differential of 1 degree C (cal/cm2/cm/C/sec)
resistivity ## electrial resistivity between faces of a 1 cm3 cube (10E-6 ohm cm) (adjusted log)
potential ## ionization potential -- energy necessary to remove 1 valence electron (ev)
valence ## principle chemical valence
radius ## approximate ionic radius of the outermost electron's orbit in crystal form (A)
form ## crystal structure in the solid state
halflife ## half life of the most stable isotope if all isotopes are radioactive (years) (adjusted log)
size ## effective cross section of nucleus in capturing a slow neutron (barn = 10E-24 cm2)
vapor ## the temperature producing a vapor pressure of 100 mm of Hg (C)
year ## year discovered
abundance ## relative abundance in the solar system (adjusted log)
crust ## relative abundance in the earth's crust (igneous rocks) (adjusted log)
sun ## relative abundance in the sun