Li Physical state ..........solid Density ........................0.534 g/cm3 Hardness ....................soft Conductivity ..............good Melting point..............180C Solubility (H2O) .........reacts Color..............................silver Sn Physical state................solid Density..............................7.31 g/cm3 Hardness..........................brittle and soft Conductivity ....................okay Melting point...................432C Solubility (H2O)..............none Color...................................grayish silver Ar Physical state...............gas Density.............................0.00178 g/cm 3 Hardness.........................none Conductivity ...................very poor Melting point..................189.2C Solubility (H2O).............none Color .................................colorless Unknown #7 Physical state................solid Density..............................5.32 g/cm3 Hardness..........................fairly brittle Conductivity ....................okay Melting point...................937C Solubility (H2O)..............none Color...................................gray Ag Physical state................solid Density..............................10.50 g/cm3 Hardness..........................somewhat soft Conductivity ....................excellent Melting point...................961C Solubility (H2O)..............none Color...................................silver Ne Physical state .............gas Density ...........................0.00090 g/cm3 Hardness .......................none Conductivity .................very poor Melting point ................249C Solubility (H2O) ...........none Color................................colorless Ga Physical state................solid Density .............................5.904 g/cm3 Hardness .........................soft Conductivity....................medium Melting point ..................30C Solubility (H2O)..............none Color ..................................silvery white Unknown #8 Physical state................solid Density..............................1.74 g/cm3 Hardness..........................medium Conductivity ....................good Melting point...................958C Solubility (H2O)..............reacts slowly Color...................................silvery white Cu Physical state................solid Density .............................8.96 g/cm3 Hardness..........................somewhat soft Conductivity....................excellent Melting point ..................1083C Solubility (H2O)..............none Color ..................................reddish brown Br Physical state................liquid Density..............................3.12 g/cm3 Hardness..........................none Conductivity ....................very poor Melting point...................7.2C Solubility (H2O)..............negligible Color...................................reddish brown Cs Physical state................solid Density .............................1.87 g/cm3 Hardness .........................soft Conductivity....................good Melting point ..................28C Solubility (H2O)..............reacts violently Color ..................................silver Unknown #9 Physical state................solid Density..............................11.85 g/cm3 Hardness..........................very soft Conductivity ....................medium Melting point...................303C Solubility (H2O)..............none Color...................................silvery white C Physical state................solid Density..............................2.10 g/cm3 Hardness..........................brittle Conductivity ....................good Melting point...................3550C Solubility (H2O)..............negligible Color ....................................dark gray K Physical state................solid Density..............................1.12 g/cm3 Hardness..........................soft Conductivity ....................good Melting point...................63C Solubility (H2O)..............reacts rapidly Color...................................silver Unknown #1 Physical state................solid Density..............................2.33 g/cm3 Hardness..........................brittle Conductivity ....................intermediate Melting point...................1410C Solubility (H2O)..............none Color...................................gray Cl Physical state ...............gas Density .............................0.00321 g/cm3 Hardness .........................none Conductivity....................very poor Melting point ..................101C Solubility (H2O) .............very slight Color ..................................green-yellow Ba Physical state ...............solid Density .............................3.6 g/cm3 Hardness .........................soft Conductivity....................good Melting point ..................710C Solubility (H2O) .............reacts strongly Color ..................................silvery white Unknown #2 Physical state...............gas Density.............................0.00170 g/cm 3 Hardness.........................none Conductivity ...................very poor Melting point..................219.6C Solubility (H2O).............very slight Color .................................pale yellow He Physical state...............gas Density............................0.00018 g/cm3 Hardness ........................none Conductivity...................very poor Melting point .................272C Solubility (H2O).............none Color .................................colorless Xe Physical state .............gas Density ...........................0.00585 g/cm3 Hardness .......................none Conductivity .................very poor Melting point ................111.9C Solubility (H2O) ...........none Color................................colorless Unknown #3 Physical state ...............solid Density.............................1.53 g/cm3 Hardness.........................soft Conductivity ...................good Melting point..................39C Solubility (H2O) .............reacts violently Color..................................silvery Na Physical state................solid Density..............................0.771 g/cm3 Hardness..........................soft Conductivity ....................good Melting point...................98C Solubility (H2O)..............reacts rapidly Color...................................silver In Physical state................solid Density .............................7.31 g/cm3 Hardness .........................very soft Conductivity....................medium Melting point ..................157C Solubility (H2O)..............none Color ..................................silvery white Unknown #4 Physical state ...........gas Density.........................0.00374 g/cm3 Hardness.....................none Conductivity ...............very poor Melting point..............156.6C Solubility (H2O) .........none Color..............................colorless Ca Physical state................solid Density..............................2.07 g/cm3 Hardness..........................medium Conductivity ....................good Melting point...................845C Solubility (H2O)..............reacts Color...................................silvery white I Physical state................solid Density..............................4.93 g/cm3 Hardness..........................soft Conductivity ....................very poor Melting point...................113.5C Solubility (H2O)..............negligible Color...................................bluish-black Unknown #5 Physical state................solid Density..............................19.3 g/cm3 Hardness..........................somewhat soft Conductivity ....................excellent Melting point...................864C Solubility (H2O)..............none Color...................................gold Be Physical state................solid Density..............................1.28 g/cm3 Hardness..........................medium Conductivity ....................good Melting point...................1287C Solubility (H2O)..............none Color...................................silvery white Pb Physical state................solid Density..............................11.35 g/cm3 Hardness..........................somewhat soft Conductivity ....................fair to poor Melting point...................327.5C Solubility (H2O)..............none Color...................................silver Unknown #6 Physical state................solid Density..............................2.54 g/cm3 Hardness..........................medium/soft Conductivity ....................good Melting point...................769C Solubility (H2O)..............reacts rapidly Color...................................silvery white