The New Encyclopædia Britannica: L-ZEncyclopædia Britannica, 1992 - 32 pages |
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Page 547
... electrons surrounding the nucleus . An atomic ion is an atom having either more or fewer electrons than protons ( i.e. , more or fewer than Z electrons ) ; an ion thus has a net negative or positive electric charge . The chemical and ...
... electrons surrounding the nucleus . An atomic ion is an atom having either more or fewer electrons than protons ( i.e. , more or fewer than Z electrons ) ; an ion thus has a net negative or positive electric charge . The chemical and ...
Page 579
... Electrons around the nucleus exist in stable groups of orbits , the innermost , called the K shell , containing two electrons , the next , the L shell , containing eight electrons when it is complete , and each larger shell , M , N , O ...
... Electrons around the nucleus exist in stable groups of orbits , the innermost , called the K shell , containing two electrons , the next , the L shell , containing eight electrons when it is complete , and each larger shell , M , N , O ...
Page 582
... electrons generated from the cathode by photoemission ( from the ultraviolet photons produced in the spark ) and by electrons produced at the cathode by the arrival of positive ions . An ion of argon having a potential energy of 15.7 ...
... electrons generated from the cathode by photoemission ( from the ultraviolet photons produced in the spark ) and by electrons produced at the cathode by the arrival of positive ions . An ion of argon having a potential energy of 15.7 ...
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20th century Abelian group addition aesthetic Afghanistan agriculture Albania alcohol algae algebra animals basin called central centre ceremonial climate coast common complex numbers Congo contains Côte d'Ivoire countries crops cultivation culture dance defined desert developed drinking drug East eastern economic Egypt elements equations European example farm feet field Figure finite fish forest functor Igbo important Indians integers irrigation isomorphism Kabul Kenya Lake Lake Chad Lake Victoria land language lattice Lie algebra linear major mapping miles modern mountains Niger Nigeria Nile northern operations patterns percent period Plains plants Plateau polynomial population rainfall real numbers region ring ritual River Sahara savanna social soil South Africa southern Africa species subgroup Sudan Tanzania theory tion traditional tribes tropical United valley vector space vegetation village West Africa western x₁ Yoruba Zaire Zambia Zimbabwe