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Element Name: Gallium
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Quote your element might use
"Lost! Lost! My Precious is lost!!“ from Gollum “Lord of the Rings”
(fellowship)
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Caption for picture:
Crystallization of gallium from the
melt
Diagram: My element’s atomic structure (labeled):
Diagram: My element’s Lewis-dot diagram
Information
Chemical symbol: Ga
Atomic number: 31
Atomic mass: 69.723
Mass number: 70 (total sum of protons
and neutrons from common atom)
Number of protons, neutrons, electrons:
Protons=31, neutrons =39, electrons=31
3 Compounds my element makes: Pictures of the molecular structure of the compound
1) GaAr: Gallium arsenide is capable of converting electricity directly into coherent light and gallium arsenide is a key component of
LEDs (light emitting diodes).
Family:
Group number: 5
Elements in same group:
2) GaN: Gallium nitride was discovered to emit blue light in LEDs
Boron, Aluminum, Indium, Thallium
How are the elements in a group
similar? Elements in the same group
have similar properties
3) Ga2O3: Gallium oxide has been studied in the use of lasers, phosphors and luminescent materials
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Basic Information
Caption for picture:
This is what gallium
looks like as a solid
Born: 1875
Metal, non-metal, or semi-metal: Metal
Parents: Paul-Emile Lecoq de Boisbaudran
Hometown: France
Relationship Status (what type of element is it looking for?): Since gallium has 3 valence electrons it will be looking to bond with elements
l
looking to accept electrons. The elements in group 15 all have 5 valence electrons so they will be looking for 3 more to fill their shell, so
Gallium will be hooking up with (among others): nitrogen, phosphorus, arsenic, antimony, and bismuth
State of matter (at room temp): Solid
Physical Properties
1) Density: 5.91 g·cm−3
2) Melting point: 29.7646 °C
or 85.5763 °F
3) Boiling point: 2400 °C, ​4352 °F
Group number: 13
Period number: 4
Number of valence electrons: 3
Personal Information
Activities (What can you find your element doing?)
1) You might find gallium being spread on glass to make it look like a mirror
4) Color: silvery
2) In a thermometer recording very high temperatures because of its high boiling point
Interests: (What topics or interests are related to your element?)
Chemical Properties
1) Using Electronics: can be used as a substitute for silicon in electronics
2) Watching Blu-ray DVDs: it is used as a semi-conductor
Reactivity: (how reactive
is your element?)
Favorite Music: (Song or group that relates to your element)
Stable in air
2) “Electric Slide” by Marcia Griffith
1) “Gallows Pole” by Led Zeppelin: because name is similar
Favorite Movies: (Movie that your element is in or relates to your element)
1) All recent movies on Blu-ray because it is used in blue-ray as a semi-conductor
Stable in water
Reacts with acids and
alkalis
2) Lord of the Rings: because of the similar name of gallom
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Element Name:
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Photos of your element and it’s uses: (At least 3 with explanations)
Gallium is found in lasers
Gallium is also found in LED lights
Pictures/diagrams of Isotopes of my Element: Gallium (Ga-70)
Isotope: Ga-69
Isotope: Ga-71
Protons=31
Protons=31
Neutrons=38
Neutrons=40
Gallium is used in blu-ray players