PICLEC: GROUP VIIA & VIIB Flashcards
This group is known to be Halogens or “Salt formers”. They are UNIVALENT
GROUP VIIA - THE FLUORINE GROUP
GROUP VIIA
- This element’s name Came from the Latid word “Fluo” = “To flow”
FLUORINE
This group contains the elements:
Fluorine, Chlorine, Iodine, Bromine
GROUP VIIA - THE FLUORINE GROUP
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)
FLUORINE
GROUP VIIA - FLUORINE
- Best oxidizing agent among the Halogens
FLUORINE (F2)
GROUP VIIA - FLUORINE
- “Frosted surface”
- Attacks or etched glass
HYDROFLUORIC ACID
GROUP VIIA - FLUORINE
- “Frosted surface”
HYDROFLUORIC ACID
GROUP VIIA - FLUORINE
- Antiseptic at low concentration
- Dental prophylactic (Phylactic=stops) - Prevents dental carries
- Water disinfectant
SODIUM FLUORIDE or CALCIUM FLUORIDE
GROUP VIIA - FLUORINE
- In White of brown speckles on teeth
FLUOROSIS
GROUP VIIA - FLUORINE
- Rinse for washing diaper acting as Bacteriocide
Zn FLUOSILICATE SOLUTION
GROUP VIIA - FLUORINE
- Freon-12 or (Chlorofluorocarbon, CFC)
- Refrigerant
CCl2F2
GROUP VIIA - FLUORINE
- Freon-12, Chlorofluorocarbon (CFC)
CCl2F2
GROUP VIIA - FLUORINE
- Polymer of tetrafluoroethylene
- Used as container of HF (Coating for pans)
TEFLON
GROUP VIIA - THE FLUORINE GROUP
- This element’s Synonyms are:
1. “Dephlogisticated muriatic acid”
2. “Oxygenated muriatic acid”
CHLORINE
GROUP VIIA - THE FLUORINE GROUP
- This element’s Properties are:
1. Greenish yellow gas having a Suffocating odor
2. Has Astringent taste (spicy)
CHLORINE
GROUP VIIA - BROMINE
- Very irritant poison and powerful Escharotic
- Not used in medicines
BROMINE (Br2)
GROUP VIIA - BROMINE
- 0.1 N Bromine solution
- Used in determination of Phenols
KOPPESCHAAR’S SOLUTION
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
IODINE
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)
IODINE
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
STRONG IODINE SOLUTION
GROUP VIIA - IODINE
“Lugol’s Solution
STRONG IODINE SOLUTION
GROUP VIIA - IODINE
- 2% iodine solution with nail (more preferable than KI, more tolerable in tissues)
IODINE SOLUTION
GROUP VIIA - IODINE
- 2% iodine solution in 50% alcohol with NaI
- More irritating than iodine solution
- Does not freeze in cold weather
IODINE TINCTURE
GROUP VIIA - IODINE
- Solubilizing agent in Iodine solution
- Histolytic
- Expectorant
SODIUM IODIDE (Sodii iodidum)