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B Metalloid Atomic Number: 5 Atomic Mass: 10.811 Group: 2 Period: 13.

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Presentation on theme: "B Metalloid Atomic Number: 5 Atomic Mass: 10.811 Group: 2 Period: 13."— Presentation transcript:

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2 B Metalloid Atomic Number: 5 Atomic Mass: 10.811 Group: 2 Period: 13

3 B Discovered in 1824 by Jön Jakobs Berzerlius The name Boron Originated from the Arabian word Buruh, or the Pesian word buraq

4 Compounds Boron Triflouride (BF 3 ) Tetrafluoroborate Anion (BF 4 )

5 Common Uses Can be found in bleach Used in making windows that withstand thermal shock Is found in Silly Putty Is in a compound that is used in the Lockheed SR-71 Blackbird jet

6 Appearance Boron is a brownish black rock lump in Nature, but can be refined to a shiny metal in a lab

7 Where its found Boron is a natural element that is found as a solid in the earths crust

8 Physical Properties Melting Point: 2349 K, 2076 °C, 3769 °F Boiling Point: 4200 K, 3927 °C, 7101 °F Density: 2.08 g·cm 3 Mohs Scale: 9.5

9 Chemical Properties Boron is highly flammable In its amorphous form is react violent to high temperature by bursting into flames and forming oxides Though in its crystalline form it is not very reactive even at high temperatures Boric Acid on fire


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