(i) Which alkaline earth metal is the least reactive? Give two evidences to support your answer. (ii) Which alkaline earth metal is the most reactive? Give one evidence to support your answer. (iii) How does chemical reactivity of alkaline earth metals vary as we go down the g Please answer these and receive 20 points!! i will surly mark you the brainiest!!! {if your answer is correct} :D
Answers
Explanation:
i) lithium
ii) magnedium
Magnesium is a metal in group 2 of the periodic table, which you will read about in this. Elements in this group are called alkaline Earth metals. This makes the atom more reactive.
Barium (Ba) is one of six elements in group 2 of the periodic table, which is shown in Figure below. Elements in this group are called alkaline Earth metals. These metals are silver or gray in color. They are relatively soft and low in density, although not as soft and lightweight as alkali metals.
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. As a result, they are very reactive, although not quite as reactive as the alkali metals in group 1. For example, alkaline Earth metals will react with cold water, but not explosively as alkali metals do. Because of their reactivity, alkaline Earth metals never exist as pure substances in nature. Instead, they are always found combined with other elements.
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