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Periodic Table of the Elements: Americium
(Encyclopedia)Periodic Table of the Elements: Americium ...americium
(Encyclopedia)americium ămərĭˈshēəm [key], artificially produced radioactive chemical element; symbol Am; at. no. 95; mass no. of most stable isotope 243; m.p. about 1,175℃; b.p. about 2,600℃; sp. gr. 13....periodic law
(Encyclopedia)periodic law, statement of a periodic recurrence of chemical and physical properties of the elements when the elements are arranged in order of increasing atomic number. Such an arrangement in the for...periodic table
(Encyclopedia) CE5 periodic table, chart of the elements arranged according to the periodic law discovered by Dmitri I. Mendeleev and revised by Henry G. J. Moseley. In the periodic table the elements are arrange...dubnium
(Encyclopedia)dubnium do͞obˈnēəm [key], artificially produced radioactive chemical element; symbol Db; at. no. 105; mass number of most stable isotope 268; m.p., b.p., and sp. gr. unknown; valence +5. Situated ...Periodic Table of the Elements: Niobium
(Encyclopedia)Periodic Table of the Elements: Niobium ...Periodic Table of the Elements: Nitrogen
(Encyclopedia)Periodic Table of the Elements: Nitrogen ...Periodic Table of the Elements: Nobelium
(Encyclopedia)Periodic Table of the Elements: Nobelium ...Periodic Table of the Elements: Oganesson
(Encyclopedia)Periodic Table of the Elements: Oganesson ...Periodic Table of the Elements: Osmium
(Encyclopedia)Periodic Table of the Elements: Osmium ...Browse by Subject
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