Periodic Table of the Elements: Boron

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Periodic Table of the Elements: Boron
Atomic Number:5
Atomic Symbol:B
 Boronboron
[New Gr. from borax], chemical element; symbol B; at. no. 5; interval in which at. wt. ranges 10.806–10.821; m.p. about 2,300°C;; sublimation point about 2,550°C;; sp. gr. 2.3 at 25°C;; valence +3.
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Atomic Weight:[10.806; 10.821]
Electron Configuration:2 · 3
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