Families alkaline-earth metals

Family Alkaline Earth Metal Physical State Solid 1... 

IIA family (alkaline earth metals) Each element has two valence electrons, so it loses two electrons to form a 2+ cation. 

The person whose name is most closely associated with the periodic table is Dmitri Mendeleev (1836-1907), a Russian chemist. In writing a textbook of general chemistry, Mendeleev devoted separate chapters to families of elements with similar properties, including the alkali metals, the alkaline earth metals, and the halogens. Reflecting on the properties of these and other elements, he proposed in 1869 a primitive version of today s periodic table. Mendeleev shrewdly left empty spaces in his table for new elements yet to be discovered. Indeed, he predicted detailed properties for three such elements (scandium, gallium, and germanium). By 1886 all of these elements had been discovered and found to have properties very similar to those he had predicted. 

The electron-rich oxygen anions exhibit basic electron donor capacity. Basic metal oxides are commonly used for neutralizing or scrubbing acidic gases. Alkaline earth metal oxides have been used for the removal of NOx. The surfaces of cubic alkaline metal oxide such as MgO, CaO, and BaO are dominated by the Lewis basicity of surface oxide anions. The basicity increases down the alkaline earth family as the metal ion radii become larger and the chaige on the metal ion becomes more positive. 

The IA family is known as the alkali metals the ILAs are the alkaline earth metals the VIIAs are the halogens and the VIIIAs are the noble gases. 

In spite of the overwhelming importance of the channel mechanism for the transport of alkali and alkaline earth metal ions in biological systems, only carrier transport has been studied extensively by chemists. Studies on ion channel mimics of simple structures have long been limited to antibiotic families of gramicidin, amphotericin B, and others. Several pioneers have reported successful preparation of non-peptide artificial channels. However, their claims have been based on kinetic characteristics observed for the release of metal ions through liposomal membrane and lacked the very critical proofs of channel formation. Such a situation was... 

Notice that the oxidation states for the families such as the alkali metals, alkaline earth metals, and so on correspond to the ionic charges those elements have. 

Find, label by name and outline the following families on your periodic table alkali metals, alkaline earth metals, transition metals, halogens, and inert gases. Draw a dark line to show the separation between metals and nonmetals. Also, draw lines to enclose the metalloids. Colored pencils can be used to distinguish between the families. 

Elements observed in this activity (copper, iron, cobalt, nickel, zinc, sodium, magnesium, calcium, bromine, and iodine) belong in the following families alkali metals, alkaline earth metals, transition metals and halogens. Place each element in its proper family. Is there any relationship between the element s family and the element s color ... 

Research the common physical and chemical properties for each family (a vertical column) in the periodic table. The families to consider are alkali metals, alkaline earth metals, inert gases, halogens, and transition metals. 

A column of the periodic table is called a family. Some families have special names. Group IA elements are called alkali metals, group IIA elements are called alkaline earth metals, group VIIA elements are called halogens, and group VIIIA elements are called the noble gases. The group B elements are called transition elements. Elements with atomic numbers from 58 to 71 are called lanthanides, and elements with atomic numbers from 90 to 103 are called actinides. Families have similar chemical and physical properties. For example, the alkali metals are soft metals at room temperature they are shiny, conduct... 

There are some relationships between a metal s position on the periodic table and the physical properties studied. Magnesium and calcium, alkaline earth metals, are not very malleable or ductile. They have low densities 1.74 g/cm3 and 1.55 g/cm3, respectively. All of the other metals tested are transition metals. They exhibit a wide range of physical properties. Copper and silver are in the same family. They are both quite ductile and malleable. They have fairly high densities. 

The alkali metals are the most chemically active metals. Alkaline earth metals are second in reactivity. Elements in the same family have the same outermost electron configuration. Alkali metals have one outermost electron that is easily transferred to needy atoms. Alkaline earth metals have two outermost electrons to share or transfer. The transition metals are the least active. 

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