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Group 1 elements/ Alkali metals

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Harsh Patel

on 23 February 2013

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Transcript of Group 1 elements/ Alkali metals

Though on top of the group 1 elements, it is not part of the group 1 elements Group 1 also called the alkali metals Properties:
Chemically they are highly reactive to water and an atmosphere that contains water vapor
Also, all of the elements in Group 1 have 1 electron in their outer electron level
All have low densities, melting points, boiling points (compared to other metals)
All are silvery metals that are soft enough to be cut with a knife Lithium (Li) Properties:
Atomic weight: 6.941 a.m.u.
Standard state of matter: solid
Color: silvery-grayish
Melting/Freezing Point: 453.69 K (180.69 °C)
Boiling/Condensation Point: 1615 K (1342 °C)
Density: 0.535 g/ cm Group 1
(also called alkali metals) Fun Fact:
Lithium is considered to be one of the three elements synthesized during the Big Bang By: Harsh Patel Sodium (Na) Properties:
Atomic weight: 22.99 a.m.u.
Standard state of matter: Solid
Color: silvery-white
Melting/Freezing Point: 370.87 K (97.87 °C)
Boiling/Condensation Point: 1156 K (883 °C)
Density: 0.968 g/ cm 3 3 Fun Fact:
Even though sodium is highly reactive, it is the sixth most abundant element in the Earth's crust, but in different forms such as sodalite and of course rock salt Potassium (K) Properties:
Atomic weight: 39.1 a.m.u.
Standard state of matter: Solid
Color: silvery-gray
Melting/Freezing Point: 336.53 K (63.53 °C)
Boiling/Condensation Point: 1032 K (759 °C)
Density: 0.862 g/ cm 3 Fun Fact:
Potassium's main purpose to help crops grow and it is the main ingredient in fertilizer because heavy crop growth depletes the soil of it's potassium. Rubidium (Rb) Properties:
Atomic weight: 85.47 a.m.u.
Standard state of matter: Solid
Color: grey white
Melting/Freezing Point: 336.53 K (63.53 °C)
Boiling/Condensation Point: 1032 K (759 °C)
Density: 0.862 g/ cm Fun Fact:
Rubidium was named after the Latin word rubidus which means "red lines" because of the bright red lines it showed in its emission spectrum Censium (Cs) Properties:
Atomic weight: 132.91 a.m.u.
Standard state of matter: Solid
Color: silvery-gold
Melting/Freezing Point: 301.59 K (28.59 °C)
Boiling/Condensation Point: 944 K (671 °C)
Density: 1.93 g/ cm 3 3 Fun Fact:
To find censium, they evaporated 44,000 liters of mineral water to yield 7.3 grams of censium. Francium (Fr) Properties:
Atomic weight: (223) a.m.u.
Standard state of matter: Solid
Color: N/A
Melting/Freezing Point: unknown
Boiling/Condensation Point: unknown
Density: unknown
No Photo yet Fun Fact:
It is estimated that one francium atom is inside of 1 X 10 uranium atoms 8 References/ Work Cited:
Wikipedia Org. "Alkali Metal - Wikipedia, the Free Encyclopedia." Alkali Metal. Wikipedia Org., 20 Feb. 2013. Web. 22 Feb. 2013. <http://en.wikipedia.org/wiki/Alkali_metal>.
Winter, Mark. "The Group 1 Elements." The Group 1 Elements. The University of Sheffield, 2011. Web. 23 Feb. 2013. <http://www.webelements.com/nexus/chemistry_page/group-1-elements>.
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