What are the properties of the Chalcogens?
Chalcogens have various atomic sizes. However, each of these elements have 6 valence electrons. The density, melting and boiling points, and atomic radius increases with bigger atomic weights. Oxygen, sulfur, and selenium are non-metals, while tellurium and polonium are semi-metals, and can conduct electricity.
What are chemical properties of group 16?
Oxidation states: The elements of this group have a configuration of ns2 np4 in their valence shell, they may attain noble gas configuration either by gaining two electrons, forming M-2, or by sharing two electrons, thus forming two covalent bonds.
What are some characteristics of the oxygen family?
General Characteristics of the Oxygen Group Elements
- Electronic Configuration. The elements of the oxygen family have six electrons in the outermost shell and have the general electronic configuration s ns2 np4.
- Atomic and Ionic Radii.
- Ionisation Enthalpies.
- Electronegativity.
- Electron Gain Enthalpy.
Is group 16 on the periodic table reactive?
Group 16 of the periodic table is also called the oxygen group. The first three elements—oxygen (O), sulfur (S), and selenium (Se)—are nonmetals. All group 16 elements have six valence electrons and are very reactive.
Why are the Group 16 elements called chalcogens?
-Group-16 elements are also called chalcogens. They are called so because most of the copper ores have copper in the form of oxides and sulphides. They also contain small amounts of selenium and tellurium. The ores of copper are called ‘chalcos’ in Greek.
What are the characteristics of boron?
Characteristics: Boron is a metalloid, intermediate between metals and non-metals. It exists in many polymorphs (different crystal lattice structures), some more metallic than others. Metallic boron is extremely hard and has a very high melting point.
What is the oxidation state of group 16 elements?
The common oxidation state of group 16 elements is +2, +4, +6. The group 16 elements, also known as the chalcogens have 6 valence electrons, and hence they can achieve noble gas configuration either by gaining 2 electrons or by sharing two electrons i.e., by forming M2- ions, or forming two covalent bonds.
What are the hydrides of group 16 elements?
The Group 16 hydrides are:
- O: water, H2O; hydrogen peroxide, H2O2; trioxidane H2O.
- S: hydrogen sulfide, H2S; hydrogen disulfide, H2S.
- Se: hydrogen selenide, H2Se.
- Te: hydrogen telluride, H2Te.
- Po: hydrogen polonide, H2Po.
What is group 16 on the periodic table called?
oxygen group element, also called chalcogen, any of the six chemical elements making up Group 16 (VIa) of the periodic classification—namely, oxygen (O), sulfur (S), selenium (Se), tellurium (Te), polonium (Po), and livermorium (Lv).
What does group 16 have in common?
It consists of the elements oxygen, sulfur, selenium, tellurium and polonium. These can be found in nature in both free and combined states. The group 16 elements are intimately related to life. We need oxygen all the time throughout our lives.
Are group 16 elements metals?
The chalcogens are the first group in the p block to have no stable metallic elements. All isotopes of polonium (Po), the only metal in group 16, are radioactive, and only one element in the group, tellurium (Te), can even be described as a semimetal.
Which element in group 16 has the largest atomic radius?
polonium
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.
What is group 16 called in the chemistry tables?
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. It consists of the elements oxygen, sulfur, selenium, tellurium and polonium.
What are the three general groups on the periodic table?
Group 1: alkali metals,or lithium family
What does the group number mean on periodic table?
Group numbers. The group number is an identifier used to describe the column of the standard periodic table in which the element appears. Groups 1-2 termed s-block elements. Groups 1-2 (except hydrogen) and 13-18 are termed main group elements.
What are the uses of Group 16 elements?
Oxygen. Oxygen is very abundant and widely useful. It is the main component of the air that we breathe.