These elements all have six electrons in their outermost energy level, accounting for some common chemical properties among them. The oxygen passes into the atmosphere and the hydrogen joins with carbon dioxide to produce biomass. The liquid and solid forms are a pale blue colour. The first four elements of this group are collectively known as chalcogens (meaning ore forming elements) because [â¦] (b) This is because halogens are reactive non-metals. Physical properties of Carbon Family (1) Non-metallic nature : The non-metallic nature decreases along the group. Physical Properties Oxygen exists in all three forms - liquid, solid, and gas. Oxygen: The chemical configuration of oxygen is 1s 2 2s 2 2p 4. The chalcogens (/ Ë k æ l k É dÊ Éª n z /) are the chemical elements in group 16 of the periodic table.This group is also known as the oxygen family.It consists of the elements oxygen (O), sulfur (S), selenium (Se), tellurium (Te), and the radioactive element polonium (Po). The chemically uncharacterized synthetic element livermorium (Lv) is predicted to be a chalcogen as well. The atomic radii or the ionic radii of elements increases while progressing down a group. Oxygen first appeared in the Earthâs atmosphere around 2 billion years ago, accumulating from the photosynthesis of blue-green algae. Photosynthesis uses energy from the sun to split water into oxygen and hydrogen. Physical state and molecular structure of oxygen family - definition The elements of oxygen family have six electrons in the valence shell. The elemental structure is a cubic crystal shape. The chalcogen with the lowest atomic radius and ionic radius is oxygen, whereas the chalcogen with the largest atomic/ionic radius (excluding livermorium) is polonium. The most common substances, such as oxygen, are states, matter, solids, liquids, gases, and plasma. Overall, the carbon family elements are stable and tend to be fairly unreactive. The carbon family elements have widely variable physical and chemical properties. It consists of the elements oxygen, sulfur, selenium, tellurium and polonium. These can be found in nature in both free and combined states. The smallest chalcogen is oxygen, which has small atoms having 2 and 6 electrons in its shells. See the article on Oxygen Element for additional information and facts about this substance. C Si Ge Sn Pb ... CO 2 petroleum and natural gas Silicon is the second most abundant element after oxygen in earthâs crust in form of silicates and silica. Physical and Chemical Properties of Chalcogens. Physical and Chemical Properties of Group 17 Elements Group 17 Elements: The Halogens The elements in Group 17 are: Fluorine Chlorine Bromine Iodine Astatine These elements are known as halogens. The elements oxygen (O), sulphur (S), selenium (Se), tellurium (Te) and polonium (Po) constitute group 16 elements of the periodic table. The elements tend to form covalent compounds, though tin and lead also form ionic compounds. The electronic configuration is n s 2 n p 4 . The oxygen family consists of the elements that make up group 16 on the periodic table: oxygen, sulfur, selenium, tellurium, and polonium. However, oxygen gas is colourless, odourless, and tasteless. Oxygen is known to react with other atoms, and works to form rust through oxidization. (a) Halogen is a Greek word which means salt-formerâ. Germanium found in traces in ⦠The chemical and physical properties of oxygen make it different from other elements. Except for lead, all of the carbon family elements exist as different forms or allotropes. Group 16: General Properties and Reactions The oxygen family, also called the chalcogens, consists of the elements found in Group 16 of the periodic table and is considered among the main group elements. These are named as oxygen family after the name of the first member of the group. 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