PICLEC: GROUP VIIA & VIIB

This group is known to be Halogens or “Salt formers”. They are UNIVALENT

GROUP VIIA - This element’s name Came from the Latid word “Fluo” = “To flow”

This group contains the elements: Fluorine, Chlorine, Iodine, Bromine

GROUP VIIA - This element’s Properties are: 1. A pale yellow Gas having a characteristic odor similar to Ozone and Chlorine 2. Most reactive, Electronegative element (Diatomic molecule)

GROUP VIIA - FLUORINE - Best oxidizing agent among the Halogens

GROUP VIIA - FLUORINE - “Frosted surface” - Attacks or etched glass

GROUP VIIA - FLUORINE - “Frosted surface”

GROUP VIIA - FLUORINE - Antiseptic at low concentration - Dental prophylactic (Phylactic=stops) - Prevents dental carries - Water disinfectant

GROUP VIIA - FLUORINE - In White of brown speckles on teeth

GROUP VIIA - FLUORINE - Rinse for washing diaper acting as Bacteriocide

GROUP VIIA - FLUORINE - Freon-12 or (Chlorofluorocarbon, CFC) - Refrigerant

GROUP VIIA - FLUORINE - Freon-12, Chlorofluorocarbon (CFC)

GROUP VIIA - FLUORINE - Polymer of tetrafluoroethylene - Used as container of HF (Coating for pans)

GROUP VIIA - THE FLUORINE GROUP - This element’s Synonyms are: 1. “Dephlogisticated muriatic acid” 2. “Oxygenated muriatic acid”

GROUP VIIA - THE FLUORINE GROUP - This element’s Properties are: 1. Greenish yellow gas having a Suffocating odor 2. Has Astringent taste (spicy)

GROUP VIIA - BROMINE - Very irritant poison and powerful Escharotic - Not used in medicines

GROUP VIIA - BROMINE - 0.1 N Bromine solution - Used in determination of Phenols

GROUP VIIA - THE FLUORINE GROUP - This element’s Properties are: 1. Grayish black solid having metallic luster and characteristic Penetrating odor 2. Elementary I2 (plain iodine) is toxic 3. Antidote: Cornstarch or Sodium thiosulfate

GROUP VIIA - THE FLUORINE GROUP - This element’s Solubility (1g: 2950 Mel of water ) is: 1. Reddish Brown in polar solvents (water) 2. Violet in non polar solvents (CS2, CCl4, Chloroform)

GROUP VIIA - IODINE - “Lugol’s solution” - 5% Iodine solution - Local germicide + Histolytic (histo= human tissues) = destroys tissues - Anti-goiterogenic - Usually contain nail of KI + Enhance the solubility of iodine through the formation of trioxide ion

GROUP VIIA - IODINE “Lugol’s Solution

GROUP VIIA - IODINE - 2% iodine solution with nail (more preferable than KI, more tolerable in tissues)

GROUP VIIA - IODINE - 2% iodine solution in 50% alcohol with NaI - More irritating than iodine solution - Does not freeze in cold weather

GROUP VIIA - IODINE - Solubilizing agent in Iodine solution - Histolytic - Expectorant