6.4. References http://www.ck12.org
6.4 References
- Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
- Chlorine: User:Greenhorn1/Wikimedia Commons Bromine: User:Tomihahndorf/De.Wikipedia; Iodine: Ben
Mills (User:Benjah-bmm27/Wikimedia Commons). Chlorine: http://commons.wikimedia.org/wiki/File:Chl
orinegas.jpg; Bromine: http://commons.wikimedia.org/wiki/File:Brom_amp.jpg; Iodine: http://commons.w
ikimedia.org/wiki/File:Iodine-sample.jpg. Chlorine and iodine: Public Domain; Bromine: The copyright
holder of this work allows anyone to use it for any purpose including unrestricted redistribution, commercial
use, and modification - Dmitri Mendeleev. http://en.wikipedia.org/wiki/File:Mendeleev%27s_1869_periodic_table.png. Public Do-
main - Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
- Mercury: User:Bionerd/Wikimedia Commons; Gold: Eckhard Pecher; Copper: Scott Ehardt. Mercury: http://
commons.wikimedia.org/wiki/File:Pouring_liquid_mercury_bionerd.jpg; Gold: http://commons.wikimedia.o
rg/wiki/File:Kanazawa_Gold_Factory.jpg; Copper: http://commons.wikimedia.org/wiki/File:Stranded_lamp
_wire.jpg. Mercury: CC BY 3.0; Gold: CC BY 2.5; Copper: Public Domain - Sulfur: Ben Mills (User:Benjah-bmm27/Wikimedia Commons); Bromine: Hi-Res Images of Chemical Ele-
ments; Helium: Derek Jensen (User:Tysto/Wikimedia Commons). Sulfur: http://commons.wikimedia.org/wik
i/File:Sulfur-sample.jpg; Bromine: http://images-of-elements.com/bromine.php; Helium: http://commons.wik
imedia.org/wiki/File:Goodyear-blimp.jpg. Sulfur: Public Domain; Bromine: CC BY 3.0; Helium: Public
Domain - User:Enricoros/Wikipedia. http://commons.wikimedia.org/wiki/File:SiliconCroda.jpg. Public Domain
- Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
- Christopher Auyeung and Joy Sheng. CK-12 Foundation. CC BY-NC 3.0
- Courtesy of the US Department of Energy. http://www.etec.energy.gov/Operations/Sodium/Sodium_Index.ht
ml. Public Domain - Hi-Res Images of Chemical Elements. Be: http://images-of-elements.com/beryllium.php; Mg: http://imag
es-of-elements.com/magnesium.php; Ca: http://images-of-elements.com/calcium.php; Sr: http://images-of-el
ements.com/strontium.php; Ba: http://images-of-elements.com/barium.php. CC BY 3.0 - L. Chang. http://commons.wikimedia.org/wiki/File:Lead_shielding.jpg. Public Domain
- Hi-Res Images of Chemical Elements. Silver: http://images-of-elements.com/silver.php; Chromium: http://i
mages-of-elements.com/chromium.php. CC BY 3.0 - Ben Mills (User:Benjah-bmm27/Wikimedia Commons). http://commons.wikimedia.org/wiki/File:Coloured-
transition-metal-solutions.jpg. Public Domain - Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
- Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
- Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
- Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
- Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
- User:JJnoDog/De.Wikipedia. http://commons.wikimedia.org/wiki/File:IonizationEnergyAtomicWeight.PNG
. Public Domain - Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
- Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
- Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
- Zachary Wilson. CK-12 Foundation. CC BY-NC 3.0
- Christopher Auyeung. CK-12 Foundation. CC BY-NC 3.0
- User:Mirek2/Wikimedia Commons. http://commons.wikimedia.org/wiki/File:Periodic_trends.svg. Public