Hydrogen is often classified as a non-metal because it shares many of the properties of non-metals. For example there is a gas at room temperature. However, hydrogen shares properties with group 1 alkali metals. In liquid form, hydrogen conducts electricity like a metal.
Hydrogen is a very special element in the periodic table and does not belong to any family. Although hydrogen is in group I, it is NOT an alkali metal.
Beryllium is a very rare metal that almost never occurs in its pure form. It belongs to the group of alkaline earth metals that make up the second column of the periodic table. In its free state, beryllium is a strong but brittle metal. It is metallic silver gray.
Hydrogen is not an alkali metal per se, but it has similar properties due to the single proton (in the nucleus), an arrangement of electrons. The lone electron exists in that orbit around the nucleus. Lithium has two 1-s electrons in one inner orbit and one 2-s electron in the outer orbit.
Water is made up of two elements, hydrogen and oxygen. Hydrogen is flammable, but oxygen is not. You can’t burn clean water, so we use it to put out fires instead of lighting them. However, you can split it into hydrogen and oxygen by adding energy in the form of an electric current.
Oxygen is not a metal. The periodic table is divided into three parts: metals, semimetals (also called food iodine) and non-metals. Oxygen is classified as a non-metal. At room temperature it is a gas, cannot conduct electricity, and has a boiling point of 182.96 ° C and a melting point of 218.79 ° C.
Water is neither metallic nor non-metallic. Water, propane, salt, sugar, aspirin are some of the many chemicals that contain more than one chemically bound element. Water contains hydrogen and oxygen, two non-metals, but we don’t mean water to be a non-metal.
Calcium is a chemical element with the symbol Ca and the atomic number 20. Calcium, like an alkaline earth metal, is a reactive metal that forms a dark oxide nitride layer in the air. It is the fifth most abundant element in the earth’s crust and the third most abundant metal after iron and aluminum.
Hydrogen is a non-metal and is above the group on the periodic table because, like alkali metals, it has an ns1 electron configuration. However, it is very different from alkali metals in that it forms (H +) cations with more reluctance than other alkali metals. Hydrogen also forms dihydrogen H2 in the form of halogens.
Carbon does not contain the physical properties of a metal. Most metals are generally shiny, dull, solid and some are flexible and malleable. Metals are also excellent conductors. In this case, carbon is a non-metal.
Hydrogen is classified as a non-metal based on its physical properties. The metals to the left of the sliding elements have the shiny, conductive, malleable (can be made into plates) and ductile (can be made into wire) properties. Since hydrogen has none of these properties, it is clearly not a metal.
OSHA has requirements to limit exposure to beryllium in the workplace and for good reason: it kills. Like other breathable particles in construction, beryllium has been linked to lung diseases, particularly chronic beryllium disease. The disease kills around 100 people every year.
|Normal phase||Strong, solid|
|family||Alkaline earth metals|
|costs||$ 530 for 100 grams|
The first element of the group is non-metallic nitrogen (N), followed by phosphorus (P), another non-metallic. ■■■■■■■ (As) (figure below) and antimony (Sb) are the metalloids of this group and bismuth (Bi) is a metal. All elements of group 15 are solid with the exception of nitrogen, which is a gas.
Lithium. Lithium is a member of the alkali metal group and is found just below hydrogen in the first column of the periodic table. Like all alkali metals, it has a single valence electron that easily donates to form a cation or compound. Lithium is a soft, silvery-white metal at room temperature.
Chronic beryllium disease primarily affects the lungs. But it can affect other organs as well, as the blood carries beryllium through the body. Some cells form masses of tissue called granulomas in response to beryllium. Granulomas are a sign of chronic beryllium disease and are most commonly found in the lungs.
Helium is a non-metallic element. After hydrogen, it is the second element of the periodic table and belongs to the group of very stable noble gases.