Metallic element of atomic number

CAS 7429-90-5. Metallic element of atomic number 13 group IIIA of the periodic table aw 26.98154 valence 3 no stable isotopes. Monovalent in high-temperature compounds (A1C1 and A1F). Most abundant metal in earth s crust third most abundant of all elements. Does not occur free in nature. 

CAS 7440-36-0. Sb (from Latin stibium). Metallic element of atomic number 51, group VA of the periodic table, aw 121.75, valences 3, 4, and 5. Two stable isotopes. 

CAS 7440-41-7. Be. Metallic element of atomic number 4, group IIA of the periodic table aw 9.0121 valence 2 no stable isotopes. 

CAS 7440-43-9. Cd. Metallic element of atomic number 48, group IIB of the periodic table. Aw 112.40. Valence 2. There are eight stable isotopes. 

CAS 7440-47-3. Cr. Metallic element of atomic number 24, group VIB of the periodic table. Aw 51.996, valences of 2, 3, 6 four stable isotopes. Name derived from Greek for color. 

CAS 7440-48-4. Co. Metallic element of atomic number 27, group VIII of the periodic table. Aw 58.9332. Valences 2,3 no stable isotopes. There are several artificial radioactive isotopes, the most important being Co. Coordination number 4 (divalent), 6 (trivalent). 

CAS 7440-50-8. Cu. Metallic element of atomic number 29, group IB of the periodic table, aw 63.546, valences 1, 2 two stable isotopes. 

CAS 7439-91-0. La. Metallic element of atomic number 57, group IIIB of the periodic table, a rare earth of the cerium group, aw 138.9055, valence = 3 two stable isotopes. 

CAS 7439-92-1. Pb. Metallic element of atomic number 82, group IVA of the periodic table, aw 207.2, valences = 2,4, four stable isotopes. The isotopes are the end products of the disintegration of three series of natural radioactive elements uranium (206), thorium (208), and actinium (207). 

CAS 7439-96-5. Mn. Metallic element of atomic number 25, group VIIB of periodic table, aw 64.9380, valences = 2, 3, 4, 6, 7 no stable isotopes four artificial radioisotopes. 

CAS 7440-09-7. K. Metallic element of atomic number 19, group IA of the periodic table, an alkali metal, aw 39.098, valence of 1. Potassium-40 is a naturally occurring radioactive isotope. There are also two stable isotopes. The synthetic isotope, po-tassium-42, is used in tracer studies, primarily in medicine. An essential element in plant growth and in animal and human nutrition occurs in all soils. 

CAS 7440-17-7. Metallic element of atomic number 37, group IA of the periodic table, aw 85.4678, valence = 1. One stable form, principal natural radioactive isotope is rubidium-87. It is the second most electropositive and the second most alkaline element, has lowest ionization potential. Highly reactive. 

CAS 7440-29-1. Th. Metallic element of atomic number 90, a member of the actinide series (group IIIB of periodic table), aw 232.0381, valence of 4 radioactive, no stable isotopes. 

Synonyms metallic element of atomic number 83 BISMUTH-209 Bisodium Tartrate... 

Synonyms cas 7440-43-9 colloidal cadmium metallic element of atomic number 48... 

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