Periodic Table. Lee Yun Jie 1i411 Tan Jing Ling 1i421 Jerry Yong 1i426. Periodic table:. Groups of the periodic table:. Although there are 8 columns in the periodic table, our project is focused on the group I, VII and 0. These groups are the Noble Gases, Alkali Metals, and Halogens.
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Lee YunJie 1i411
Tan Jing Ling 1i421
Jerry Yong 1i426
The noble gases are a group of chemical elements with very similar properties: under standard conditions, they are all odourless, colourless, monatomic gases, with very low chemical reactivity. In fact, they are the least reactive elements in the Periodic Table. The six noble gases are helium (He), neon (Ne), argon (Ar), krypton (Kr), xenon (Xe) and radon (Rn).
The Alkali metals are extremely reactive, with one outer shell electron, resulting in the formation of ions.
Because of its reactivity with water, the Alkali Metals are never found as a pure substance, residing in several combinations of compounds.
The densities of Alkali Metals increase down the periodic table. However, sodium is denser than potassium.
With decreasing melting points as you move down the periodic table, Caesium and Francium are liquids at room temperature.