Introducing
Your new presentation assistant.
Refine, enhance, and tailor your content, source relevant images, and edit visuals quicker than ever before.
Trending searches
Halogens are five non-metallic elements found in group 17 of the periodic table. The term "halogen" means "salt-former" and compounds containing halogens are called "salts". All halogens have 7 electrons in their outer shells, giving them an oxidation number of -1.
- formed a yellow
coloration
Karl Wilhelm Scheele
and Humpry David discovered chlorine
a. sodium bromide - as medical agent
b. silver bromide - used in photography
2
Br + 2NaOH NaBr + NaBrO
+ H O
2
- ethylene dibromide - a constituent of ethyl gasoline/ used in gasoline
- production of colorless solution
Antoine Jerome Balard discovered
bromine in 1826
c. hydrobromic acid - dilute solution is used in medicine for nervous disorder
d. potassium bromide - sedative
a. sodium chloride - a seasoning agent; food preservative
b. mercuric chloride - antiseptic; antisyphillitic
c. potassium chlorate - production of matches,
fireworks and explosives.
1. - in both solutions, blue litmus turned to red; the solution turned white
2 2 7
K Cr O + 14HCl 2KCl + 2CrCl + 7H O + 3Cl
3 2 3
d. calcium hypochlorite - as disinfectant for washing floors and walls in hospital and sick rooms
e. Daxin's solution - in surgery as an antiseptic agent;
for washing wounds
f. vinyl chloride - used in making polyvinyl chloride
(PVC) plastics
2 2
2MnO + 8HCl 2MnCl + 4H O + 2Cl
2 2
Physical state: liquid
Color: deep reddish brown
Odor: disagreeable odor
Density compared to water: 3 times denser than water
Physical state: gas
Color: pale yellow
Odor: pungent, excessively irritating action when breathed
Solubility in water: moderately soluble
Density compared to air: 2.5 times heavy as air
Bernard Courtois discovered
iodine in 1811
2 2
6
- used in gaseous diffusion process to provide fuel atomic power plants
a. silver iodide - used in photography
Flourine was discovered by Henry Moissan in 1886
b. hydroiodic acid - a 10% solution is used medicinally to correct certain disorders such as asthma and rheumatism
e. iodophors - used as sanitizing agents in hospitals,restaurants,diaries,ect. it is known that iodophors kill three times known polio virus strains.
f. potassium idoide - used in making iodized salts.
c. sodium iodide - used in cases of goiter where the thyroid gland is deficient in its secretion of iodine.
d. iodoform - used in antiseptic and disinfectant
- iodine is soluble in ethyl alcohol
- used as antiseptic for cuts and wounds
formation of dark blue solution
very slightly soluble in water