What are the oxygen group elements? What is oxygen?

The oxygen group element is the periodic table.

on group A elements (new IUPAC regulations: group 16).

This group contains five elements: oxygen (O), sulfur (S), selenium (se), tellurium (Te), and polonium (Po), of which polonium is a metal, tellurium is a quasi-metal, and oxygen, sulfur, and selenium are typical non-metallic elements. In standard condition.

Except for the elemental oxygen which is a gas, the elemental elements of the other elements are solid.

When combined with metal elements, the four elements of oxygen, sulfur, selenium and tellurium usually show a -2 oxidation state; But when sulfur, selenium, and tellurium are in their acid roots.

At medium time, the highest oxidation state can reach +6.

1.Atomic structure.

similarities. (1) The outermost shell of an atom has 6 electrons.

2) It is easy to get 2 electrons in the reaction.

3) Exhibits oxidation.

2.Differences in the structure of atoms.

1) Number of nuclear charges.

Increase in turn. 2) The number of electron layers increases sequentially.

3) Atomic radius.

As it increases sequentially, the electron-gaining ability decreases sequentially, and the oxidation decreases sequentially.

3.Similarity.

1) It can react with most metals.

2) Both can be combined with hydrogenation to form gaseous hydrides.

3) All can be burned in oxygen.

4) The hydrate corresponding to the oxide is an acid.

5) All are non-metallic.

4.Progressive (from oxygen >to tellurium).

1) The stability of gaseous hydrides gradually decreases.

2) Reducibility of gaseous hydrides.

Gradually enhanced. 3) The acidity of the gaseous hydride aqueous solution gradually increases.

4) The acidity of the hydrate corresponding to the most ** oxide is gradually weakened.

5) The non-metallic properties gradually weaken.

Oxygen O, sulfur S, selenium SE, tellurium Te, Polonium PO].

Group A of the periodic table – position, the outermost number of electrons is 6 – structure.

Oxygen is a chemical element with an atomic number of 8 and a relative atomic mass. In the periodic table, oxygen is a trillion members of the oxygen group elements, and it is also a highly reactive second-period non-metallic element that readily forms compounds with almost all other elements (mainly oxogen-resistant compounds).

Under standard conditions, two oxygen atoms combine to form oxygen, which is a colorless, odorless, and odorless diatomic gas with the chemical formula O2. Oxygen is second only to hydrogen and helium in the universe by mass, and is the most abundant element in the earth's crust. Oxygen not only accounts for 89% of the pure water per mu, but also accounts for the volume of air.

I'm assuming you're thinking about this from a life-centric perspective – it's a difficult question because each aspect of the biosphere depends on the other.

Yes, we will die from the lack of readily available oxygen ......But then again, if the nitrogen cycle (for example) also ceases to exist, all living things will die.

Not all living things need oxygen to breathe (although it is present in many biological compounds, so they still need oxygen isolation to exist). This is usually the case with soil organisms (microorganisms found in soil, usually burying themselves as "decomposers" in nutrient cycling). That being said, they still rely on the nutrient cycle for the rest of the processes carried out by other organisms in almost unlimited positions throughout the ecosystem – they may need oxygen to breathe.

So ......Not ...... in my opinionBecause there are many basic elements of life (carbon, nitrogen, oxygen, hydrogen, magnesium, potassium, iron, sulfur + a Heatz ton), I do not know how to assess their relative importance, and instead of asking, what will happen when ** disappears, the answer to the multi-element will be mass extinction, which means that the effects of the absence of oxygen will be as severe than, for example, the element carbon (in the case of life).

<> equation that denotes the outermost electron of an element's atom with a small black dot or " " around the element symbol is an electronic formula. The formula with **" " indicates that a pair of common electron pairs is a structural formula.

Oxygen is a non-polar element. The middle four electrons are shared to form a covalent double bond, which forms an 8-child stable structure with the other four electrons of its own. The oxygen atom has a total of 8 electrons, with the outermost six electrons; In order to achieve the 8-electron stable structure of the outer shell, it is necessary to form common electron pairs with other atoms.

Physical properties of oxygen.

Normally, oxygen coarse gas is a colorless and odorless gas that is slightly denser than air and is not easily soluble in water. Under certain conditions, Sun Min can be liquidated into a light blue liquid or solidified into a light blue solid. The fact that fish and shrimp in rivers and seawater can survive indicates that there is oxygen dissolved in the water in nature.

The above content reference: Encyclopedia - Oxygen.

Categories: Education Academic Exams >> Study Help.

Analysis: Oxygen, atomic number 8, atomic weight is, the name of the element ** in Greek, originally meaning "acid former". In 1774, the British scientist Priest used a lens to focus sunlight on mercury oxide and discovered a gas that could strongly help combustion.

Lavoisier studied this gas and correctly explained its role in combustion. Oxygen is the most abundant and widely distributed element in the earth's crust, and its content in the earth's crust is. Elemental oxygen accounts for 23% of the wide transport in the atmosphere.

There are three stable isotopes of oxygen: oxygen-16, oxygen-17, and oxygen-18, with oxygen-16 being the most abundant.

Under normal temperature and normal pressure, oxygen is a colorless and odorless gas; Melting point, boiling point, gas density grams.

Except for inert gases, halogens and some inactive metals that need to be indirectly oxidized to form oxides, all other metals and non-metals can directly interact with oxygen to form oxides. The most abundant oxides are water and silica. Oxygen can also form peroxides and superoxides with reactive metals.

Oxygen is not only an indispensable substance for animal life maintenance processes and combustion processes, but also plays an important role in modern industrial production.