Groups of the periodic table- Alkaline earth metals

Question	Answer
What elements are the Alkaline Earth metals?	beryllium (Be), magnesium (Mg), calcium (Ca), strontium (Sr), barium (Ba), and radium (Ra)
What block do they lie in?	Lie in the s-block as they have electrons in the s orbital only in the outer shell
How many electrons in the outer shell?	2 electrons, in a full s-orbital
Properties	They are all shiny, silvery-white, somewhat reactive metals at standard temperature and pressure
Reactivity	Readily lose their two outermost electrons to form cations with charge 2+ and an oxidation state, or oxidation number of +2
Where are they found?	All the discovered alkaline earth metals occur in nature, with element 120 aside
Other properties	All Alkaline Earth metals have relatively low densities, melting points, and boiling points.
Reactions	All of the alkaline metals react with the halogens to form the alkaline earth metal halides, all of which being ionic crystalline compounds (except for beryllium chloride, which is covalent)
Reaction with water	All react with water to form strongly alkaline hydroxides, except beryllium

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	Created by eoin.examtime over 10 years ago

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