الثلاثاء، 2 يونيو 2015

What is the alkali metal properties installed

Alkali metals are a series of chemical elements in the first group in the periodic table, with the exception of hydrogen, namely: lithium, sodium, potassium, rubidium, cesium, Frnseyoum. All of these elements chemically active and therefore it is rare and there is no element of which in his case the individual, it is often kept in the mineral oil in order to Owalqirsan Ataatvaal with air [1].
The alkali metals are silvery color and is solid as it is of little intensity, and strongly react with halogens to form ionic salt, and react with water to form an alkaline hydroxide (BCD), but do not be so only after violent outbursts!. And each of these elements of the smooth electron in the outer shell, so it is up to the power mode is better for her cover letter is full through lost an electron to form an ion with a positive charge worth 1.


The only element hydrogen Baketrunh placed at the top of the first group but not of metals, in addition to that there is in the nature of the body diatomic gas. To remove the outer electron hydrogen required amount of energy greater than the amount necessary to move the outer electron of metals. Halogens, hydrogen is similar in that it requires an electron to fill the outer cover of his energy, and this can be considered that hydrogen behaves like halogens, in some circumstances and results from this moiety (ion) Alhedrid.oukd was prepared Alheidredat of some vehicles and some of the alkali metals.
Under high pressure conditions such as found in the inside Jupiter, hydrogen can be in metal image and acting like alkali metals, see metallic hydrogen.
Properties
Metals basal alkaline show a tendency in different properties when moving to the bottom of the Group, for example, a decrease in Alkahrmah, increased chemical activity and a decrease in the melting point and Alglian.otaatmaz as soft as other metals and She's pale color and shine and is also a low-density increase density generally With the notable exception of the fact that potassium is less dense than sodium.

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