where are alkaline earth metals found on earth?
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The most abundant of the alkaline earth metals on Earth is calcium which is the fifth most abundant element in the Earth's crust. Here is the list in order: Calcium. Magnesium.
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Group 2A elements are the alkaline earth metals and all have two electrons in the outermost energy level because their electron configuration ends in s2. Group 5A elements all have five electrons in the outermost energy level because their electron configuration ends in s2p3.
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All of the alkaline earth metals, except magnesium and strontium, have at least one naturally occurring radioisotope: beryllium-7, beryllium-10, and calcium-41 are trace radioisotopes. Calcium-48 and barium-130 have very long half-lives and thus occur naturally. All isotopes of radium are radioactive.
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Elements of group 1 are called alkali metals and elements of group 17 are called halogens. Thus, we can conclude that out of the given options alkaline earth metals are found on the periodic table in group 2.
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The alkaline-earth elements are highly metallic and are good conductors of electricity. They have a gray-white lustre when freshly cut but tarnish readily in air, particularly the heavier members of the group.
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2. Where are the alkali metals and the halogens located on the periodic table? The alkali metals are in Group1 and the halogens are in Group 7.
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The alkaline-earth elements are highly metallic and are good conductors of electricity. They have a gray-white lustre when freshly cut but tarnish readily in air, particularly the heavier members of the group. Beryllium is sufficiently hard to scratch glass, but barium is only slightly harder than lead.
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The alkaline earth metals are all of the elements in the second column (column 2A) of the periodic table. This group includes beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba) and radium (Ra). Alkaline earth metals have only two electrons in their outermost electron layer.
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The elements in Group 2 (beryllium, magnesium, calcium, strontium, barium, and radium) are called the alkaline earth metals (Figure below). These elements have two valence electrons, both of which reside in the outermost s sublevel. The general electron configuration of all alkaline earth metals is ns2.
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All the alkaline earth metals have two electrons in their valence shell, so they lose two electrons to form cations with a 2+ charge. Most of the chemistry has been observed only for the first five members of the group; the chemistry of radium is not well established due to its radioactivity.
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Alkaline earth metals also react with oxygen, though not as rapidly as Group 1 metals; these reactions also require heating. Similarly to Group 1 oxides, most group 2 oxides and hydroxides are only slightly soluble in water and form basic, or alkaline solutions.
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The second column on the periodic table of the chemical elements is collectively called the alkaline earth metal group: beryllium, magnesium, calcium, strontium, barium, and radium. Because the outer electron structure in all of these elements is similar, they all have somewhat similar chemical and physical properties.
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It was not until later that scientists were able to separate the metallic, elemental forms from the oxides, but the name "alkaline earth" stuck. ... Group 2 elements are called alkaline earth metals because they form “alkaline solutions",hydroxides, when react with water and their oxides are found in earth crust...
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Reactivity of Alkaline Earth Metals All alkaline Earth metals have similar properties because they all have two valence electrons. They readily give up their two valence electrons to achieve a full outer energy level, which is the most stable arrangement of electrons. ... This makes the atom more reactive.
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The most common alkali metal is sodium, which is 2.8 percent of Earth's crust. The most common sodium compound is sodium chloride (NaCl), salt. The next most common is potassium, which is 2.6 percent of Earth's crust. The other alkali metals are much rarer.
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Group 2A — The Alkaline Earth Metals. Group 2A (or IIA) of the periodic table are the alkaline earth metals: beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).
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The lighter alkaline earth metals, such as magnesium and calcium, are very important in animal and plant physiology. You all know that calcium helps build your bones. Magnesium can be found in chlorophyll molecules.