what is an atom with alkaline earth metal characteristics?
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Alkaline earth metals: A group of chemical elements in the periodic table with similar properties: shiny, silvery-white, somewhat reactive at standard temperature and pressure. They readily lose their two outermost electrons to form cations with charge +2.
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Radium is the sixth element of the second column in the periodic table. It is the heaviest of the alkaline earth metals. Radium atoms have 88 electrons and 88 protons with 2 valence electrons in the outer shell. Under standard conditions radium is a silvery metal.
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Why are alkaline Earth metals less reactive than alkali metals? A: It takes more energy to remove two valence electrons from an atom than one valence electron. This makes alkaline Earth metals with their two valence electrons less reactive than alkali metals with their one valence electron.
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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). They are harder and less reactive than the alkali metals of Group 1A.
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Except for Be, all the alkaline earth metals react with N2 to form nitrides, and all react with carbon and hydrogen to form carbides and hydrides. Alkaline earth metals dissolve in liquid ammonia to give solutions that contain two solvated electrons per metal atom.
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Alkali metals share many similar properties including: They are shiny, soft, metals. They are very reactive. They all have one valence electron in the outermost shell which they seek to lose in order to have a full outer shell.
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The alkali metals each have a single electron in the s orbital of their outer shell; they combine with a +1 valence. The alkaline earth metals have a full s orbital, with two electron, so they have a +2 valence.
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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 alkaline earth metals have two valence electrons. The alkaline earth metals are in the second family on the periodic table. It is a main group...
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The Brainliest Answer! The alkaline earth metals are six chemical elements in group 2 of the periodic table. They are beryllium(Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra).
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Answer and Explanation: The alkaline earth metals have two valence electrons.
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Chemical Elements.com - Alkaline Earth Metals. The alkaline earth elements are metallic elements found in the second group of the periodic table. ... Because of their reactivity, the alkaline metals are not found free in nature.
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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). They are harder and less reactive than the alkali metals of Group 1A.
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Alkaline Earth Metals. The alkaline earth metals are the second most reactive family of elements. Beryllium, magnesium, calcium, strontium, barium and radium are all shiny, and silvery-white. They all have low densities, melting points and boiling points, and they tend to form solutions with a pH greater than 7.
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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 elements have very similar properties: they are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure. ... All the discovered alkaline earth metals occur in nature, although radium occurs only through the decay chain of uranium and thorium and not as a primordial element.
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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).