Group 18
Group 17
Group 16
Also known as chalocogens
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As in groups 14 and 15, the lightest group 16 member has the greatest tendency to form multiple bonds
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Metallic character increases down the group, with tellurium classified as a metalloid and polonium as a metal. Melting point, boiling point, density, atomic radius, and ionic radius all increase down the group.
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Tellerium is used as abasic ingredientients in plastic cups
Also called Halogens
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There is an increase in atomic radius down the group because ofthe number of layers of electrons around the nucleus and the pull the outer electrons feel from the nucleus.
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Extremely reactive due to the desire of wanting to gain that e-
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Flourine is used for toothpaste and Chlorine is used in medicine,dyes and plastic
Also known as Noble gases
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" due to the fact that their filled valence shells (octets) make them extremely nonreactive.
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Atomic mass, boiling point, and atomic radii INCREASE down a group in the periodic table.
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Krypton can be found in energy efficent windows
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While Xenon is used in x rays etc