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Showing posts with the label science

RADIUM

 RADIUM (88) (Solid)  226(1,600 years)A Atomic radius: Atomic volume:45.2 cm(3)/mol at 300Deg. Kelvin Atomic weight:226.0254 (Based on Carbon 12) Boiling point:1809Deg. Kelvin Covalent radius: Crystal structure:Cubic,body centered Density:5 g/cm(3) at 300Deg. Kelvin Electrical conductivity: Electron configuration:1s(2)2s(2)p(6)3s(2)p(6)3d(10)4s(2)p(6)4d(10)5s(2)p(6) 4f(14)5d(10)6s(2)p(6)7s(2) Electronegativity:.9 (Pauling's) First ionization potential:5.279 V Heat of fusion: Heat of vaporization: Melting point:973Deg. Kelvin Oxidation states:2 very basic Specific heat capacity: Thermal conductivity:.186 W cm(x.1) K(x.1) at 300Deg. Kelvin Description:An intensely radioactive,shining white metallic element that resembles barium chemically,occurs in combination in minute quantities in minerals(as in pitchblende and carnotite) emits alpha particles and gamma rays to form radon,and is used chiefly in luminous materials and the treatment of cancer.

RUBIDIUM

 RUBIDIUM (37) (Solid)  86(18.7 days)B-  87(480,000,000,000 years)B- Atomic radius:2.98Deg. A (Quantum mech. value for a free atom) Atomic volume:55.9 cm(3)/mol at 300Deg. Kelvin Atomic weight:85.4678 (Based on Carbon 12) Boiling point:961Deg. Kelvin Covalent radius:2.16Deg. A Crystal structure:Cubic,body centered Density:1.53 g/cm(3) at 300Deg. Kelvin Electrical conductivity:.0779 10(x6) Ohm(x.1) cm(x.1) at 293Deg. Kelvin Electron configuration:1s(2)2s(2)p(6)3s(2)p(6)3d(10)4s(2)p(6)5s(1) Electronegativity:.82 (Pauling's) First ionization potential:4.177 V Heat of fusion:2.192 kJ/mol at melting point Heat of vaporization:72.216 kJ/mol at boiling point Melting point:312.64Deg. Kelvin Oxidation states:1 very basic Specific heat capacity:.363 Jg(x.1) K(x.1) at 300Deg. Kelvin Thermal conductivity:.582 W cm(x.1) K(x.1) at 300Deg. Kelvin Description:A soft,silvery metallic element that decomposes water with violence and bursts into flame spontaneously in air.

TIN

 TIN (50) (Solid)  121(76 years)B- Atomic radius:1.72Deg. A (Quantum mech. value for a free atom) Atomic volume:16.3 cm(3)/mol at 300Deg. Kelvin Atomic weight:18.69 (Based on Carbon 12) Boiling point:2867Deg. Kelvin Covalent radius:1.41Deg. A Crystal structure:Tetragonal Density:7.3 g/cm(3) at 300Deg. Kelvin Electrical conductivity:.0917 10(x6) Ohm(x.1) cm(x.1) at 293Deg. Kelvin Electron configuration:1s(2)2s(2)p(6)3s(2)p(6)3d(10)4s(2)p(6)4d(10)5s(2)p(2) Electronegativity:1.96 (Pauling's) First ionization potential:7.344 V Heat of fusion:7.029 kJ/mol at melting point Heat of vaporization:295.8 kJ/mol at boiling point Melting point:505.06Deg. Kelvin Oxidation states:4,2 amphoteric(2) Specific heat capacity:.227 Jg(x.1) K(x.1) at 300Deg. Kelvin Thermal conductivity:.666 W cm(x.1) K(x.1) at 300Deg. Kelvin Description:A soft,faintly bluish-white,lusterous,low melting,crystalline metallic element that is malleable and ductile at room temperatures and is used as a protective coating...

THORIUM

 THORIUM (90) (Solid)  228(1.913 years)A  230(77,000 years)A  232(1,400,000,000 years)A Atomic radius: Atomic volume:19.9 cm(3)/mol at 300Deg. Kelvin Atomic weight:232.0381 (Based on Carbon 12) Boiling point:5061Deg. Kelvin Covalent radius:1.65Deg. A Crystal structure:Cubic,face centered Density:11.7 g/cm(3) at 300Deg. Kelvin Electrical conductivity:.0653 10(x6)Ohm(x.1) cm(x.1) at 293Deg. Kelvin Electron configuration:1s(2)2s(2)p(6)3s(2)p(6)3d(10)4s(2)p(6)4d(10)5s(2)p(6) 4f(14)5d(10)6s(2)6d(2)7s(2) Electronegativity:.1.3 (Pauling's) First ionization potential:6.08 V Heat of fusion:16.1 kJ/mol at melting point Heat of vaporization:514.4 kJ/mol at boiling point Melting point:02028Deg. Kelvin Oxidation states:4 basic Specific heat capacity:.12 Jg(x.1) K(x.1) at 300Deg. Kelvin Thermal conductivity:.54 W cm(x.1) K(x.1) at 300Deg. Kelvin Description:A radioactive tetravalent metallic element that occurs combined in minerals and is usually associated with rare-earths.

SAMARIUM

 SAMARIUM (62) (Solid)  146(70,000,000 years)A  151(93 years)B- Atomic radius:2.59Deg. A (Quantum mech. value for a free atom) Atomic volume:19.95 cm(3)/mol at 300Deg. Kelvin Atomic weight:150.4 (Based on Carbon 12) Boiling point:2064Deg. Kelvin Covalent radius:1.62Deg. A Crystal structure:Rhombohedral Density:7.54 g/cm(3) at 300Deg. Kelvin Electrical conductivity:.00956 10(x6) Ohm(x.1) cm(x.1) at 293Deg. Kelvin Electron configuration:1s(2)2s(2)p(6)3s(2)p(6)4s(2)3d(10)p(6)4d(10)5s(2)p(6) 4f(6)6s(2) Electronegativity:1.17 (Pauling's) First ionization potential:5.64 V Heat of fusion:8.63 kJ/mol at melting point Heat of vaporization:166.4 kJ/mol at boiling point Melting point:1345Deg. Kelvin Oxidation states:3,2 basic(3) Specific heat capacity:.2 Jg(x.1) K(x.1)) at 300Deg. Kelvin Thermal conductivity:.133 W cm(x.1) K(x.1) at 300Deg. Kelvin Description:A pale-gray,lusterous,metallic element that is used especially in alloys which form permanent magnets.

Biotin

                                 Biotin                           U.S. Recommended Daily Allowances                         Infants      Children    Adults and           Pregnant or                        (0-12 mo.)    (1-3 years) Children 4 Years +  Nursing Women                        50 micrograms 150 mcg     300 mcg               300 mcg                           (The U.S. RDA amounts are sufficient to meet the needs            ...

Vitamin B12

            Vitamin B12                             U.S. Recommended Daily Allowances          Infants        Children      Adults and           Pregnant or          (0-12 mo.)     (1-3 years)   Children 4 Years +   Nursing Women          2 micrograms   3 mcg         6 mcg                8 mcg                (The U.S. RDA amounts are sufficient to meet the needs           of practically all healthy people.)                Vitamin B12 (cobalamin) is a water-soluble vitamin           whose primary sources are animal p...

Niacin

                                 Niacin                                                   U.S. Recommended Daily Allowances                      Infants      Children      Adults and           Pregnant or                      (0-12 mo.)   (1-3 years)   Children 4 Years +   Nursiing Women                      8 mg         9 mg          20 mg                20 mg                      ...

Vitamin B6

                 Vitamin B6 is a water-soluble vitamin that           comprises three related forms: pryidoxine, pryidoxal and           pryidoxamine.                Function: Plays many roles in the body, the but most           important one is in protein metabolism.                Sources: Fortified instant oatmeal; fortified           ready-to-eat cereals; meat, poultry and fish; soybeans;           some fruits and vegetables, including bananas, prunes,           watermelon, spinach, sweet potatoes, and tomato juice.                Deficiency: Vitamin B6 deficiency can cause anemia,           dermatitis and convulsions. In infants, it can lead to a ...

Vitamin B1

            Vitamin B1                 U.S. Recommended Daily Allowances          Infants     Children        Adults and           Pregnant or          (0-12 mo.)  (1-3 years)     Children 4 Years +   Nursing Women          0.5 mg       0.7 mg             1.5 mg                 1.7 mg                (The U.S. RDA amounts are sufficient to meet the needs           of practically all healthy people.)                Thiamin (vitamin B1) is a water-soluble vitamin that           was the first identified member of the TB complex g...

MAGNESIUM

 MAGNESIUM (12) (Solid)  12Mg=28(20.9 hours)B- Atomic radius:1.72Deg. A (Quantum mech. value for a free atom) Atomic volume:13.97 cm(3)/mol at 300Deg. Kelvin Atomic weight:24.305 (Based on Carbon 12) Boiling point:1363Deg. Kelvin Covalent radius:1.36Deg. A Crystal structure:Hexagonal Density:1.74 g/cm(3) at 300Deg. Kelvin Electrical conductivity:.226 10(6) Ohm(x.1) cm(x.1) at 293Deg. Kelvin Electron configuration:1s(2)2s(2)p(6)3s(2) Electronegativity:1.31 (Pauling's) First ionization potential:7.646 V Heat of fusion:8.954 kJ/mol at melting point Heat of vaporization:127.4 kJ/mol at boiling point Melting point:922Deg. Kelvin Oxidation states:2, very basic Specific heat capacity:1.02 Jg(x.1) K(x.1) at 300Deg. Kelvin Thermal conductivity:1.56 W cm(x.1) K(x.1) at 300Deg. Kelvin Description:A silver-white,light,ductile,malleable metallic element that occurs abundantly in nature,and is used in metallurgy and chemical processes,in photography,in signaling,and in the manufacture of py...

SODIUM

 SODIUM (11) (Solid)  11Na=22(2.06 years)B+,EC  24(15.02 hours)B- Atomic radius:2.23Deg. A (Quantum mech. value for a free atom) Atomic volume:23.7 cm(3)/mol at 300Deg. Kelvin Atomic weight:22.98977 (Based on Carbon 12) Boiling point:1156Deg. Kelvin Covalent radius:1.54Deg. A Crystal structure:Cubic,face centered Density:.97 g/cm(3) at 300Deg. Kelvin Electrical conductivity:.21 10(x6) Ohm(x.1) cm(x.1) at 293Deg. Kelvin Electron configuration:1s(2)2s(2)p(6)3s(1) Electronegativity:.93 (Pauling's) First ionization potential:5.139 V Heat of fusion:2.598 kJ/mol at melting point Heat of vaporization:96.96 kJ/mol at boiling point Melting point:371.0Deg. Kelvin Oxidation states:1, very basic Specific heat capacity:1.230 Jg(x.1) K(x.1) at 300Deg. Kelvin Thermal conductivity:1.41 W cm(x.1) K(x.1) at 300Deg Kelvin Description:A silver,soft white,waxy ductile element of the alkali metal group that occurs abundantly in nature in combined form,and is very active chemically.

Vitamin C

                           Vitamin C (ascorbic acid) is a water-soluble vitamin            found in a variety of fruits and vegetables that is easily            destroyed when exposed to air, heat and light.                           Functions: Essential for growth and maintenance of all            cells and tissues; promotes the absorption of iron in the            intestines; and acts as a water-soluble antioxidant in the            body.                           Sources: Many fruits and vegetables, including citrus            fruits, cantaloupe, strawberries, tomatoes, green and red    ...

VITAMIN K

                          VITAMIN K                          Vitamin K is a fat-soluble vitamin usually formed in            the body by intestinal bacteria but also available from            some plant and animal sources.                          Function: Essential in the formation of prothrombin, a            substance necessary for proper clotting of blood, and at            least five other blood-clotting factors.                          Sources: All green leafy vegetables (including lettuce,            spinach, kale, and cabbage), eggs, meats, cereal grain      ...

folic acid

                 Folate (folic acid and related compounds) is a           water-soluble vitamin widely distributed in foods.                Functions: Involved in red blood cell production; aids           in the formation of genetic material within every body           cell.                Sources: Liver; yeast; dried beans, peas and lentils;           oranges; fortified ready-to-eat cereals; whole-wheat           products; some vegetables (including asparagus, beets,           broccoli, brussels sprouts, and spinach).                Deficiency: Signs include cracks on the lips and at           the corners of the mouth, anemia, gastrointestinal   ...

Vitamin E

                           Vitamin E is a fat soluble vitamin not recognized as            an essential nutrient until the 1960s, about 40 years after            its discovery.                           Function: Prevents potentially harmful oxidation of            polyunsaturated fatty acids in the body, which would lead            to cell damage; important in protecting red blood cell            membranes from oxidation.                           Sources: Nuts; vegetable oils; fortified ready-to-eat            cereals; wheat germ; green leafy vegetables; margarines          ...

Vitamin B2

            Vitamin B2                U.S. Recommended Daily Allowances                Infants (0-12 mo.): 0.6 mg                Children (1-3 years): 0.8 mg                Adults and Children 4 Years +: 1.7 mg                Pregnant or or Nursing Women:  2.0 mg                (The U.S. RDA amounts are sufficient to meet the needs           of practically all healthy people.)                Riboflavin (vitamin B2) is a water-soluble vitamin           that plays a role in energy production.                Functions: Component of two coenzymes that help           co...

VITAMIN D

                           VITAMIN D                           Vitamin D is a fat-soluble vitamin available from some            foods, as well as from sunlight.                           Functions: Forms the hormone 1,            25-dihydrocholecalciferol, which aids in the absorption and            metabolism of calcium and phosphorus for bone and tooth            formation.                           Sources: Sunlight (which stimulates vitamin D            production in the skin), fatty fish, fish liver oils,            vitamin D-for...

Lithium

 Lithium (3) (Solid) Atomic radius:2.05Deg.A (Based on Carbon 12) Atomic volume:13.10 cm(3)/mol at 300Deg. Kelvin Atomic weight:6.941 (based on Carbon 12) Boiling point:1615Deg. Kelvin Covalent radius:1.23Deg. A Crystal structure:Cubic - Body centered Density:.53 g/cm(3) at 300Deg. Kelvin Electrical conductivity:.108 10(x6) Ohm(x.1) cm(x.1) at 293Deg. Kelvin Electron configuration:1s(2)2s(1) Electronegativity:0.93 (Pauling's) First ionization potential:5.392 V Heat of fusion:3.0 kJ/mol at melting point Heat of vaporization:145.92 kJ/mol at boiling point Melting point:453.7Deg. Kelvin Oxidation states:1 Very basic Specific heat capacity:3.6, Jg(x.1) k(x.1) at 300Deg. Kelvin Thermal conductivity:.847 W cm(x.1) k(x.1) at 300Deg. Kelvin Description:A soft,silver-white element of the alkali metal group,it is the lightest metal known and is used especially in nuclear reactions and metallurgy.

IRON

 IRON (26) (Solid)  59(44.6 days)B- Atomic radius:1.72Deg. A (Quantum mech. value for a free atom) Atomic volume:7.1 cm(3)/mol at 300Deg. Kelvin Atomic weight:55.847 (Based on Carbon 12) Boiling point:3135Deg. Kelvin Covalent radius:1.17Deg. A Crystal structure:Cubic,body centered Density:7.86 g/cm(3) at 300Deg. Kelvin Electrical conductivity:.0993 10(x6) Ohm(x.1) cm(x.1) at 293Deg. Kelvin Electron configuration:1s(2)2s(2)p(6)3s(2)p(6)3d(6)4s(2) Electronegativity:1.83 (Pauling's) First ionization potential:7.87 V Heat of fusion:13.8 kJ/mol at melting point Heat of vaporization:349.6 kJ/mol at boiling point Melting point:1809Deg. Kelvin Oxidation states:2,3 Amphoteric(3) Specific heat capacity:.44 Jg(x.!0 K(x.!0 at 300Deg. Kelvin Thermal conductivity:0.802 W cm(x.1) K(x.1) at 300Deg. Kelvin Description:A heavy,malleable,ductile,magnetic,silver-white element that readily rusts in moist air;occurs native in meteorites and combined in most igneous rocks;is the most used of metals ...