The Basics of the Periodic TableErik Anderson, Period 8

Monday, October 29, 12

What is it?

The Periodic Table is a display of the elements, organized by their atomic numbers, electron configurations, and recurring chemical properties. The Elements are presented in order of increasing atomic number.

It was first drafter by Russian Chemist and inventor Dmitri Mendeleev

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History

In 1869 Dmitri Mendeleev published his version of the periodic table for scientist to reference to in order of weight.

Henry Moseley developed the atomic number in 1913.

Because of the atomic numbers they were able to predict missing elements from the table.

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Organization

From left to right, they are arranged in increasing atomic number (protons )

Metals are on the left, nonmetals on the right and metalloids along the zig-zag line that divides the metals and nonmetals, inert gases on the far right

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Element Relationships

As you go down a period, they have one more ring of electrons

As you go down a column, called groups, the elements have the same number of electrons, which gives them similar chemical activity

As you go down a period, they have one more ring of electrons

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Hydrogen

Atomic Number: 1

Symbol: H

Hydrogen is the lightest element. It is the most abundant element in the universe and makes up about 90% of the universe weight wise. In liquid form it is essential to life.

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Oxygen

Atomic Number: 8

Symbol: O

About one fifth of the atmosphere is oxygen, the gas is colorless, odorless, and tasteless.

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Silver

Atomic Number: 47

Symbol: Ag

Pure silver has a brilliant white metallic look and also has the highest electrical and thermal conductivity of all metals. Silver iodide is known for causing clouds to produce rain.

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Cited Sources

Works Cited

"The Element Hydrogen[Click for Isotope Data]." It's Elemental. N.p., n.d. Web. 29 Oct. 2012. <http://education.jlab.org/itselemental/ele001.html>.

"The Element Oxygen[Click for Isotope Data]." It's Elemental. N.p., n.d. Web. 29 Oct. 2012. <http://education.jlab.org/itselemental/ele008.html>.

"The Element Silver[Click for Isotope Data]." It's Elemental. N.p., n.d. Web. 29 Oct. 2012. <http://education.jlab.org/itselemental/ele047.html>.

"Home of the Periodic Table." Periodic Table of the Elements by WebElements. N.p., n.d. Web. 29 Oct. 2012. <http://www.webelements.com/>.

"Periodic Table." Wikipedia. Wikimedia Foundation, 28 Oct. 2012. Web. 29 Oct. 2012. <http://en.wikipedia.org/wiki/Periodic_table>.

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