The chalcogens (/ ˈ k æ l k ə dʒ ɪ 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). (b) This is because halogens are reactive non-metals. Oxygen: The chemical configuration of oxygen is 1s 2 2s 2 2p 4. Overall, the carbon family elements are stable and tend to be fairly unreactive. 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. Photosynthesis uses energy from the sun to split water into oxygen and hydrogen. See the article on Oxygen Element for additional information and facts about this substance. It is also the least dense at 0.00143 g/cm 3. (a) Halogen is a Greek word which means salt-former’. However, oxygen gas is colourless, odourless, and tasteless. Physical Properties Oxygen exists in all three forms - liquid, solid, and gas. Physical Properties of the Chalcogens Atomic/Ionic Radii of the Chalcogens. 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. Germanium found in traces in … Except for lead, all of the carbon family elements exist as different forms or allotropes. The atomic radii or the ionic radii of elements increases while progressing down a group. C Si Ge Sn Pb ... CO 2 petroleum and natural gas Silicon is the second most abundant element after oxygen in earth’s crust in form of silicates and silica. These can be found in nature in both free and combined states. The elements tend to form covalent compounds, though tin and lead also form ionic compounds. Physical properties of Carbon Family (1) Non-metallic nature : The non-metallic nature decreases along the group. The chemically uncharacterized synthetic element livermorium (Lv) is predicted to be a chalcogen as well. It consists of the elements oxygen, sulfur, selenium, tellurium and polonium. The most common substances, such as oxygen, are states, matter, solids, liquids, gases, and plasma. The liquid and solid forms are a pale blue colour. Oxygen first appeared in the Earth’s atmosphere around 2 billion years ago, accumulating from the photosynthesis of blue-green algae. they exist naturally in various mineral salts in […] The carbon family elements have widely variable physical and chemical properties. The smallest chalcogen is oxygen, which has small atoms having 2 and 6 electrons in its shells. Physical and Chemical Properties of Chalcogens. The chemical and physical properties of oxygen make it different from other elements. The electronic configuration is n s 2 n p 4 . Oxygen is known to react with other atoms, and works to form rust through oxidization. The elements oxygen (O), sulphur (S), selenium (Se), tellurium (Te) and polonium (Po) constitute group 16 elements of the periodic table. The first four elements of this group are collectively known as chalcogens (meaning ore forming elements) because […] These are named as oxygen family after the name of the first member of the group. 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. 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 oxygen passes into the atmosphere and the hydrogen joins with carbon dioxide to produce biomass. 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