The New Encyclopædia BritannicaEncyclopædia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 182
... atoms or molecules . In fluores- cent lamps , for example , a mercury atom is excited by the impact of an electron having an energy of 6.7 electron volts or more , raising one of the two outermost electrons of the mercury atom in the ...
... atoms or molecules . In fluores- cent lamps , for example , a mercury atom is excited by the impact of an electron having an energy of 6.7 electron volts or more , raising one of the two outermost electrons of the mercury atom in the ...
Page 612
... atoms ( indivisible chunks of matter ) in empty space ( which he seems to have thought of as an entity in its own right ) . These atoms can be imperceptibly small , and they interact either by impact or by hooking together , depend- ing ...
... atoms ( indivisible chunks of matter ) in empty space ( which he seems to have thought of as an entity in its own right ) . These atoms can be imperceptibly small , and they interact either by impact or by hooking together , depend- ing ...
Page 1086
... atom , beginning with the outermost shell of electrons but including also easily dislodged elec- trons within the electronic structure . Atoms of the alkali metals ( lithium , sodium , potassium , rubidium , cesium , and francium ...
... atom , beginning with the outermost shell of electrons but including also easily dislodged elec- trons within the electronic structure . Atoms of the alkali metals ( lithium , sodium , potassium , rubidium , cesium , and francium ...
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