1. Tyler, Tre, Haeley, Chelsea
Halogen Family 17
Tyler, Tre, Haeley, Chelsea

2. Halogen Characteristics
-Halogen contains the elements in group 17- Fluorine, Chlorine, Iodine, Astatine -All elements have 7 valence electrons -Most made with covalent compounds -When combining with another element is called a Halide -Often bond with metals in Group 1 -Highly Unstable -Tendency to form salts -Good oxidizers -Always found in nature chemically bonded

3. Iodine Parent: Bernard Courtois Birth Place and Date: 1811; France
Gender: Non-Metal
Protons/Electrons: 53
Neutrons: 74
Positive Aspects:
Important in medicine, both radioactive and non-radioactive forms.
-Silver Iodine is used in photography
Can be added to table salt to prevent thyroid disease
Other uses include catalysts, animal feeds and printing inks and dyes.
Negative Aspects:
-Slightly toxic in small doses, highly poisonous in large amounts
-Iodine vapor causes extreme eye irritation

4. Iodine
Density: 4.93 g/cm3 at 293 k
Boiling point: degrees C
Melting point: degrees C
Specific Heat: J/g K
Electric Conductivity: 1.0 cm x 10-7 S cm-1
Heat Conductivity: 0.45 W m-1 K-1
Iodine can be found in Chilean saltpetre, caliches, old salt brines, and salt wells.
-Valence #: 7
-Ion:
-Oxidation number Maximum: 7
Minimum: -1
-Reactivity:
-Compounds:
-Oxide: I2O5, I4O9, I2O4
-Hydride: HI
-Chloride: ICI, ICI3

5. Fluorine *Most reactive of all elements*
*Founded by: Georgius Agricola (1530)*
Pale yellow or brown
Density: 1.7 g/mL
Boiling Point: C
Protons: 9
Electrons: 9
Neutrons: 10
Melting Point: C
Valence Electrons: 7

6. Astatine
*Founders: Dr. Corson, Mackenzie, and E. Segre at the University of California*
Melting Point: 302 C
Protons: 85
Electrons: 85
Neutrons: 125
Boiling Point: 340 C
HIGHLY radioactive
Density: 7g/cm2
Valence Electrons: 7

7. BrOMINE Br Parent: Antoine J Balard Birth Place/Date: 1826, Germany
NON-METAL Br
Parent: Antoine J Balard
Birth Place/Date: 1826, Germany
Protons/Electrons: 35
Neutrons: 45 Br
Positive Aspects:
Orthorhombic Crystal Structure, Red Color, used in pesticides and flame retardant materials, obtained from seawater
Negative Aspects:
Poisonous, smells bad- highly irritating to eyes and lungs, found in carcinogen 7

8. BrOMINE 3 Compounds: Acetyl Bromide, Bromo Benzene, Sodium Bromide
Reactivity: intermediate between chlorine and iodine
Oxidation States: 7, 5, 4, 3, 1, -1,
Valence: 7
Density: g/cm3
Boiling Point: °C ( K, °F)
Melting Point: -7.2 °C ( K, °F)
Specific Heat: .473 J/g K

9. Sources http://www.chemnetbase.com/periodic_table/elements/iodine.htm