Upload
jogelyn-mae-plaza
View
219
Download
0
Embed Size (px)
Citation preview
8/11/2019 Atomic Structure & Uses
1/24
The Halogens(Atomic Structure and Uses)
8/11/2019 Atomic Structure & Uses
2/24
Fluorine (F)
Name:Fluorine
Symbol:F
Atomic Number:9Atomic Mass:18.998404 amu
Melting Point:-219.62 C
Boiling Point:-188.14 C
Number of Protons/Electrons:9
Number of Neutrons:10
Number of Energy Levels:2
Colour:Greenish
8/11/2019 Atomic Structure & Uses
3/24
Fluorine (F)
Date of Discovery:1886
Discoverer:Joseph Henri Moissan
Name Origin:From the Latin word fluo(flow)
Uses:Refrigerants
Obtained From:mineral fluorite
8/11/2019 Atomic Structure & Uses
4/24
8/11/2019 Atomic Structure & Uses
5/24
Chlorine (Cl)
Name:Chlorine
Symbol:Cl
Atomic Number:17Atomic Mass:35.4527 amu
Melting Point:-100.98 C
Boiling Point:-34.6 C
Number of Protons/Electrons:17
Number of Neutrons:18Number of Energy Levels:3
Colour:Light green
8/11/2019 Atomic Structure & Uses
6/24
Chlorine (Cl)
Date of Discovery:1774
Discoverer:Carl Wilhelm ScheeleName Origin:From the Greek
word khlros(green)
Uses:Water purification, bleaches
Obtained From:Salt
8/11/2019 Atomic Structure & Uses
7/24
8/11/2019 Atomic Structure & Uses
8/24
Bromine (Br)
Name:Bromine
Symbol:Br
Atomic Number:35Atomic Mass:79.904 amu
Melting Point:-7.2 C
Boiling Point:58.78 C
Number of Protons/Electrons:35Number of Neutrons:45
Number of Energy Levels:4
Colour:Dark red
8/11/2019 Atomic Structure & Uses
9/24
Bromine (Br)
Date of Discovery:1826
Discoverer:Antoine J. BalardName Origin:From the Greek
word brmos(stench)
Uses:Poisonous
Obtained From:Sea Water
8/11/2019 Atomic Structure & Uses
10/24
8/11/2019 Atomic Structure & Uses
11/24
Iodine (I)
Name:Iodine
Symbol:I
Atomic Number:53Atomic Mass:126.90447 amu
Melting Point:113.5 C
Boiling Point:184.0 C
Number of Protons/Electrons:53Number of Neutrons:74
Number of Energy Levels:5
Colour:Purple black
8/11/2019 Atomic Structure & Uses
12/24
Iodine (I)
Date of Discovery:1811
Discoverer:Bernard Courtois
Name Origin:From the Greek
word ides(violet)
Uses:required in humans
Obtained From:sodium and potassium
compounds
8/11/2019 Atomic Structure & Uses
13/24
8/11/2019 Atomic Structure & Uses
14/24
Astatine (At)
Name:Astatine
Symbol:At
Atomic Number:85Atomic Mass:(210.0) amu
Melting Point:302.0 C
Boiling Point:337.0 C
Number of Protons/Electrons:85Number of Neutrons:125
Number of Energy Levels:6
Colour:Presumed very dark
8/11/2019 Atomic Structure & Uses
15/24
Astatine (At)
Date of Discovery:1940
Discoverer:D.R. Corson
Name Origin:From the Greek
word astatos(unstable)
Uses:Medical diagnosis
Obtained From:Man-made
8/11/2019 Atomic Structure & Uses
16/24
8/11/2019 Atomic Structure & Uses
17/24
Uses of Fluorine
The main use of fluorine is
toothpaste even though it isnt
as fluorine itself but instead as
fluoride, a compound of
fluorine.
Water treatmentExtraction of Aluminium
Non stick coatings
Enrichment of Uranium
8/11/2019 Atomic Structure & Uses
18/24
Uses of Chlorine
Chlorine is used mostly
to kill bacteria or as a
bleach. Chlorine bleaches
a piece of universal
indicator paper white.
Water disinfectionHydrochloric acid
Plastics
8/11/2019 Atomic Structure & Uses
19/24
Uses of Bromine
Bromine is one of the main
ingredients in camera films(as silver bromide).
Tear gas
Flame retardants
Pharmaceuticals
8/11/2019 Atomic Structure & Uses
20/24
8/11/2019 Atomic Structure & Uses
21/24
Uses of Iodine
When dissolved in water, iodine
can be used as a strong antisepticor as a test for starch.
Halogen lamps
X ray diagnosis
Salt additive
Thyroid treatment
Cancer treatment
8/11/2019 Atomic Structure & Uses
22/24
8/11/2019 Atomic Structure & Uses
23/24
Uses of Astatine
Astatine is studied by nuclear
scientists. Its high radioactivityrequires special handling
techniques and precautions
Thyroid treatment
Cancer treatment
8/11/2019 Atomic Structure & Uses
24/24
Thank you for watching !