Francium Zak Long A-period

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Presentation transcript:

Francium Zak Long A-period Hi my name is Zak and today I will be telling you about the element I picked out Francium. Francium was one of the last naturally-occurring elements to be discovered. In 1991 scientists thought that Francium was similar to other alkali metals. Scientists now have found a way to trap this element’s atoms in the middle of a magnetic field. So now they can preform measurements. Zak Long A-period

Properties of the Element Group/Category: Alkali Metal, group 1 Reactivity: Unknown Density: Unknown The group number of my element is number 1 and the category of this element is an alkali metal. This element is so rare that scientists can not find its reactivity and its density.

Properties of the Element Melting point: 27.0 °C (300.15 K, 80.6 °F) Boiling point: 677.0 °C (950.15 K, 1250.6 °F) State of Matter: Solid The melting point of this element is 27C ,300K ,and 80F. The boiling point is 677C ,950K ,and 1250F. And the state of matter is a solid

History Discover: Marguerite Perey When Discovered: 1931 How Discovered: 99 percent of actinium atoms decay and the other 1 percent breaks down into a new element Francium Fact: May be the rarest element found on the Earth’s surface This element was discovered by Marguerite Perey a French physicist. She was born in 1909 and died in 1975. She discovered this element in 1931 from the decay of actinium atoms. Only 99 percent of actinium atoms decay and the other 1 percent breaks down into the element Francium. This element may be the rarest element on the earth’s surface. Some experts believe that no more than 15 grams of the element exists in the earth’s crust.

Uses for Francium This element has no uses because of its rarity Francium has no uses because the element it is so rare. And scientists hope to learn about the composition of matter by studying the element.

Francium Works sited Works Cited "It's Elemental - The Periodic Table of Elements." Science Education at Jefferson Lab. N.p., n.d. Web. 8 Dec. 2010. <http://education.jlab.org/itselemental/>. Newton, David E., and Lawrence W. Baker. Chemical elements from carbon to krypton. detroit: UÂ·xÂ·l, 1999. Print. "Photos of physicists, astronomers and other scientists - Emilio SegrÃ¨ Visual Archives." Photos of physicists, astronomers and other scientists - Emilio SegrÃ¨ Visual Archives. N.p., n.d. Web. 9 Dec. 2010. <http://photos.aip.org>. "The Photographic Periodic Table of the Elements." The Photographic Periodic Table of the Elements. N.p., n.d. Web. 9 Dec. 2010. <http://periodictable.com/index.html>. MLA formatting by BibMe.org.