Halogens a.k.a Barbarians Iodine 53 Protons 74 Neutrons 53 Electrons.

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Presentation transcript:

Halogens a.k.a Barbarians

Iodine 53 Protons 74 Neutrons 53 Electrons

About Iodine Atomic Number: 53 Atomic Symbol: I Atomic Weight: Atomic Radius: pm Melting Point: degrees C Boiling Point: degrees C

More About Iodine  Discovered by Courtois in 1811  Can be obtained from the reaction of potassium iodine with copper sulfate  A bluish-black, lustrous solid  Very useful in medicine  Important in organic chemistry

Bromine Nucleus: 35 Protons 45 Neutrons 35 Electrons

About Bromine oAtomic Number: 35 oAtomic Symbol: Br oAtomic Weight: oAtomic Radius: 115 pm oMelting Point: -7.2 degrees C oBoiling Point: 58.8 degrees C

More About Bromine  Discovered by Balard in 1826  Obtained from natural brines from wells in Michigan and Arkansas  The only nonmetallic liquid element  It is a heavy, mobile, reddish-brown liquid  Used in fumigants, flame proofing agents, water purification compounds, dyes, medicines, sanitizers, and more

Chlorine 17 Protons 18 Neutrons 17 Electrons

About Chlorine  Atomic Number: 17  Atomic Symbol: Cl  Atomic Weight:  Atomic Radius: 99 pm  Melting Point: degrees C  Boiling Point: degrees C

More About Chlorine DDiscovered in 1774 by Scheele, who thought it contained oxygen. NNamed in 1810 by Davy, he insisted it was an element IIn nature it is found in the combined state only IIt is a greenish-yellow gas UUsed in making everyday products, like making safe drinking water

Fluorine 9 Protons 10 Neutrons 9 Electrons

About Fluorine  Atomic Number: 9  Atomic Symbol: F  Atomic Weight:  Atomic Radius: 70.9 pm  Melting Point: degrees C  Boiling Point: degrees C

More About Fluorine  After 74 years of continuous effort, fluorine was finally isolated in 1866 by Moissan  It is a pale yellow gas  Used in producing uranium  In small amounts it helps prevent dental cavities

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