GROUP VIIA HALOGEN GROUP

- Livy

Fluorine

this element occurs as yellowish gas

Fluorine

this element is used as an anticariogenic agent; mineralization of the enamel; prevent bacteria to produce acid

Fluorine

this element is the strongest oxidizing agent

• Fluorite or fluorspar (CaF2)

• Fluoroapatite (Ca3(PO4)3F)

• Cryolite (Na3AlF6)

Sources of Fluorine

CaF2·Ca3(PO4)2

this is a compound of fluorine; a normal constituent of bones and teeth

NaF

this is a compound of fluorine; used as a fluorinating agent for drinking water

SnF2

this is a compound of fluorine; used as a dental prophylaxis

CCl2F2 (Freon)

this is a compound of fluorine; used as an aerosol propellant & refrigerant

Teflon

this is a compound of fluorine; a polymer of tetrafluoroethylene; used as a

container of HF

Zn fluorosilicate solution

this is a compound of fluorine; used for washing diaper (bacteriostatic)

Etching test

an identification test of Fluorine; it etches or markings on the glass become permanent allowing conc. H2SO4 to stay on the glass for some period

Reaction w/ AgNO3

an identification test of Fluorine; where no ppt. formed

Chlorine

this element is used to disinfect water

Dephlogisticated muriatic acid

this is a compound of chlorine; a greenish yellow gas having a suffocating odor

HCl (Muriatic acid)

this is a compound of chlorine; used for neutralizing, stabilizing or solubilizing agent for other substances

Diluted HCl

this is a compound of chlorine; used as a gastric acidifier in achlorhydria

Na, K and Ca chlorides (Ringer’s solution)

this is a compound of chlorine; used as an electrolyte replenisher

Strong NaCl solution

this is a compound of chlorine; an emetic

NH4Cl

this is a compound of chlorine; used as an expectorant and systemic acidifying agent

NaOCl (Dakin’s solution)

this is a compound of chlorine; used as an oxidizing agent, disinfectant & bleaching agent

KClO3

this is a compound of chlorine; it is a weak antiseptic

NSS

this is a compound of chlorine; consist of 0.9% physiological salt solution, electrolyte replenisher

Halazone

this is a compound of chlorine; used as a water purifier

ClO2

this is a compound of chlorine; used as a water purifier & bleaching agent

Reaction w/ AgNO3

an identification test of chlorine; white ppt. of AgCl soluble in NH3 but insoluble in HNO3

Reaction w/ mercurous nitrate

an identification test of chlorine; white ppt. of Hg2Cl2

Bromine

this element is a dark reddish brown, fuming liquid w/ suffocating odor

Bromine

this element is a powerful caustic and germicide

Reaction w/ AgNO3

an identification test of bromine; yellow ppt. of AgBr insoluble in HNO3

Reaction w/ KMnO4+H2SO4+chloroform

an identification test of bromine; orange– brown layer due to the liberation of Br2

Iodine

this element is the most metallic of the halogens

Iodine

this element is reddish brown in polar solvents while violet in non-polar solvents

Iodine

this element is known as the oldest germicide

Iodine

this element has halogen present in thyroid hormones

goiter

Lack of I2

cornstarch & sodium thiosulfate

Antidotes for I2 toxicity

Iodide

an exert expectorant action (HI syrup)

Phenolated iodine solution (Boulton’s solution)

this is a compound of iodine; used as an antibacterial

Strong Iodine Solution (Lugol’s solution)

this is a compound of iodine; used to prepare the thyroid gland for surgical removal (hyperthyroidism)

this is a compound of iodine; used as a radioactive iodine for thyroid diseases and cancer therapy

NaI & KI

this is a compound of iodine; used as an expectorant & enhances the solubility of iodine

Povidone iodine

this is a compound of iodine; used as antiseptic

Iodine tincture

this is a compound of iodine; used as a disinfection of cuts and abrasions

Reaction w/ AgNO3

an identification test of iodine; yellow ppt. of AgI insoluble in HNO3

Reaction w/ KMnO4+H2SO4+chloroform

an identification test of iodine; violet layer due to the liberation of I2

Astatine

this element is the rarest

Astatine

this element is the only radioactive and metallic halogen

Astatine

this element resembles iodine but is more metallic