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Atomic weight | Atomic volume | discovered | state (s, l, g) | melting point | boiling point | electronegativity | Shells | electron configuration | structure | uses | toxicity | hardness | characteristics | reaction with air | number of isotopes | hydride(s) | oxide(s) | chloride(s) | image | thermal conductivity | electrical conductivity | polarizability | source | abundance earth's crust | cost, pure | cost, bulk | rel. abund. solar system | Density @ 293 K |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Barium(Ba) | 137.33 | 39.24 (cm3/mol) | 11/30/1807 | s | 998.2 (K) | 2,123 (K) | .89 | 2,8,18,18,8,2 | [Xe] 6s2 | bcc: body-centered cubic | X-ray imaging agnt(BaSO4) | ... | ... | soft | vigorous,wt/ht=>BaO,Ba2N3 | 7 | BaH2 | BaO | BaCl2 |  | 18.4 J/m-sec-deg | 1/mohm-cm | 39.7 (A^3) | Barite (sulfate) | 2.6 (log) | 55 $/100g | $/100g | 0 | 3 (3) |
| Beryllium(Be) | 9.012 | 5. (cm3/mol) | 11/30/1796 | s | 1,551.2 (K) | 2,773 (K) | 1.57 | 2,2 | [He] 2s2 | hcp: hexagonal close pkd | Cu alloys, X-ray windows | yes | ... | toxic | vigorous, w/ht=>BeO,Be3N2 | 1 | BeH2 | BeO | BeCl2 |  | 201 J/m-sec-deg | 250 1/mohm-cm | 5.6 (A^3) | Beryl (silicate) | .4 (log) | 530 $/100g | 59 $/100g | - (-) | 1 (1) |
| Calcium(Ca) | 40.08 | 29.9 (cm3/mol) | 11/30/1807 | s | 1,112.2 (K) | 1,767 (K) | 1 | 2,8,8,2 | [Ar] 4s2 | hcp: hexagonal close pkd | lime, cement | ... | 1.5 (mohs) | burns brightly | vigorous, =>CaO, Ca3N2 | 6 | CaH2 | CaO | CaCl2 |  | 201 J/m-sec-deg | 255.754 1/mohm-cm | 22.8 (A^3) | Calcite (oxide) | 4.65 (log) | 11 $/100g | $/100g | 4 (4) | 1 (1) |
| Magnesium(Mg) | 24.305 | 13.97 (cm3/mol) | 11/30/1807 | s | 922 (K) | 1,378 (K) | 1.31 | 2,8,2 | [Ne] 3s2 | hcp: hexagonal close pkd | alloys, flash bulbs | ... | 2 (mohs) | burns brightly | vigorous,w/ht =>MgO,Mg3N2 | 3 | MgH2 | MgO | MgCl2 |  | 156 J/m-sec-deg | 224.719 1/mohm-cm | 10.6 (A^3) | Seawater, magnesite | 4.4 (log) | 3.7 $/100g | 0.32 $/100g | 6 (6) | 1 (1) |
| Radium(Ra) | 226.025 | 45.2 (cm3/mol) | 11/30/1897 | s | 973.2 (K) | 1,973 (K) | .9 | 2,8,18,32,18,8,2 | [Rn] 7s2 | bcc: body-centered cubic | neutron source | ... | ... | Radioactive, luminescent | vigorous, =>RaO2, Ra3N2 | 4 | ... | ... | RaCl2 |  | 18.6 J/m-sec-deg | 1/mohm-cm | 38.3 (A^3) | ... | -6 (log) | $/100g | $/100g | l (l) | 5 (5) |
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