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Halogens are groups in the periodic table consisting of five chemically elements and they are  fluorine, chlorine, bromine, iodine , and astatine.

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The Nitrogen Group has the elements nitrogen, phosphorus, arsenic, antimony, bismuth, in the Group 15.

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The boron group are chemical elements in group 13 of the periodic table this are boron, aluminium, gallium, indium, thallium.

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Lanthanides Series are chemical elements found in Row 6 of the periodic and are less reactive than alkali metals are.

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The Alkali-Earth Metals are  groups strongly basic metals of the periodic table.

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A period is a horizontal row of the periodic table.

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Noble Gases are  chemical elements that are unreactive and make up group 18.

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The oxygen group, is a group of elements found in Group 16 of the periodic table and they are oxygen, sulfur, selenium, tellurium and polonium.

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The Group Carbon is one of the metals that makes up the group 14 the metals are  carbon, silicon, germanium, tin, lead, and flerovium.

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A group of heavy radioactive metallic elements, that increases the atomic number

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Transition Metals are elements that ductile and malleable, and conduct electricity and heat.

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It is one of the metals of group 1 in the periodic table

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A vertical row of the elements in the periodic table