Group+17

H a l o g e  n s


 * List of Elements: ** Fluorine(Fl), Chlorine(Cl), Bromine(Br), Iodine(I), and Astatine(At)[[image:http://www.uwplatt.edu/%7Esundin/114/image/F.jpg width="225" height="176" align="right"]]
 * ** Elements ** || ** Atomic Number ** || ** Atomic Mass ** || ** Protons ** || ** Neutrons ** || ** Electrons ** || ** Isotopes ** ||
 * F || 9 || 18.998 || 9 || 10 || 9 || 18 ||
 * Cl || 17 || 35.453 || 17 || 18 || 17 || 24 ||
 * Br || 35 || 79.904 || 35 || 45 || 35 || 31 ||
 * I || 53 || 126.90 || 53 || 74 || 53 || 37 ||
 * At || 85 || 210 || 85 || 125 || 85 || 32 ||

** Characteristics: ** 1. F- 2. Cl- 3. Br- 4. I- 5. At- ** Electron Configuration: ** 1. F-1s​²2s²2p⁵ 2. Cl-1s²2s²2p⁶3s²3p⁵ 3. Br-1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁵ 4. I-1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁵ 5. At-1s²2s²2p⁶3s²3p⁶4s²3d¹⁰4p⁶5s²4d¹⁰5p⁶6s²4f¹⁴5d¹⁰6p⁵ 1. F- n=2, l=1, ml=0, ms=-½
 * Pale yellow
 * Corrosive, poisonous gas
 * Yellow-green
 * Highly irritating
 * Gas
 * Red-brown
 * Nonmetallic liquid
 * Violet-black
 * Corrosive, poisonous solid[[image:http://www.webqc.org/elements-photo/Bromine.jpg width="243" height="227" align="right"]]
 * Black
 * Highly unstable
 * Resembles Iodine
 * Solid
 * Quantum Numbers: **

2. Cl- n=3, l=1, ml=0, ms=-½

3. Br- n=4, l=1, ml=0, ms=-½

4. I- n=5, l=1, ml=0, ms=-½

5. At- n=6, l=1, ml=0, ms=-½ 1. It's a varied group. (2 gas,2 solid,1 liquid) For more info go to []. 2. This group has the highest level of reactivity out of all groups on the periodic table. For more info go to []. 3. Halogens are never found in pure form because of their high level of reactivity, but, when in pure form, they are molecules with 2 atoms. 4. All the elements in this group are nonmetals. ** Trends: ** 1. When it comes to their quantum numbers, they are all the same except for the n variables. 2. All these nonmetal elements tend to form salts when they mix with metal elements. **Fun Facts:** 1. The term haolgen means "salt former". 2. F-
 * Properties: **
 * Its the most elctromagnetic and most reactive gas of all elements on the periodic table.
 * Its name originates from the Latin word 'fluo' meaning flow.
 * Common uses:
 * Air conditioning[[image:http://students.hthcv.hightechhigh.org/%7Eefregoso/Sophmore/math%20pictures/iodine.jpg width="220" height="218" align="right"]]
 * Refrigerator
 * Toothpaste

3. Cl- 4. Br- 5. I- 6. At- **Sources:**
 * Its name originates from the Greek word 'khloros' meaning green.
 * Common uses:
 * Bleach
 * Plastics
 * Water purification
 * It name originates from the Greek word 'bromos' meaning stench.
 * Common uses:
 * Poisons
 * Fumigants
 * Dyes[[image:http://www4.msu.ac.th/satit/studentProj/2546/M102/preriodict/astatine.jpg width="240" height="211" align="right"]]
 * Its name originates form the Greek word 'iodes' meaning violet.
 * Common uses:
 * Table salt
 * Antiseptics
 * Dyes
 * Its the heaviest element of the Halogen group.
 * Its name originates from the Greek word 'astatos' meaning unstable.
 * It has no common uses, but it's studied by nuclear scientists.
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 * http://www.webelements.com/fluorine/
 * http://www.webelements.com/chlorine/
 * http://www.webqc.org/periodictable-Bromine-Br.html
 * http://students.hthcv.hightechhigh.org/~efregoso/sophmore/myspaceTemplate.htm
 * http://202.114.88.541/astatine/elements/text/at/key.html