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<p>mark the elements</p> <p><b>New page</b></p><div>{{infobox periodic table group/header<br /> | title = {{nowrap|Alkaline earth metals}}<br /> | group number= 2<br /> | trivial name= alkaline earth metals<br /> | by element = beryllium group<br /> | CAS = IIA<br /> | old IUPAC = IIA<br /> | mark = Be,Mg,Ca,Sr,Ba,Ra<br /> | left = [[Alkali metal|alkali metals]]<br /> | right = [[Group 3 element|group 3]]<br /> }}<br /> |-<br /> ! colspan=2 style=&quot;text-align:left;&quot; | ↓&amp;nbsp;&lt;small&gt;[[Period (periodic table)|Period]]&lt;/small&gt;<br /> |-<br /> ! [[Period 2 element|2]]<br /> | {{element cell image|4|Beryllium|Be| |Solid|Alkaline earth metal|Primordial|legend=|image=Be-140g.jpg|image caption=Lump of beryllium}}<br /> |-<br /> ! [[Period 3 element|3]]<br /> | {{element cell image|12|Magnesium|Mg| |Solid|Alkaline earth metal|Primordial|legend=|image=CSIRO ScienceImage 2893 Crystalised magnesium.jpg|image caption=Magnesium crystals}}<br /> |-<br /> ! [[Period 4 element|4]]<br /> | {{element cell image|20|Calcium|Ca| |Solid|Alkaline earth metal|Primordial|legend=|image=Calcium unter Argon Schutzgasatmosphäre.jpg|image caption=Calcium stored under argon atmosphere}}<br /> |-<br /> ! [[Period 5 element|5]]<br /> | {{element cell image|38|Strontium|Sr| |Solid|Alkaline earth metal|Primordial|legend=|image=Strontium destilled crystals.jpg|image caption=Strontium floating in paraffin oil}}<br /> |-<br /> ! [[Period 6 element|6]]<br /> | {{element cell image|56|Barium|Ba| |Solid|Alkaline earth metal|Primordial|legend=|image=Barium unter Argon Schutzgas Atmosphäre.jpg|image caption=Barium stored under argon atmosphere}}<br /> |-<br /> ! [[Period 7 element|7]]<br /> | {{element cell image|88|Radium|Ra| |Solid|Alkaline earth metal|from decay|legend=|image=Radium226.jpg|image caption=Radium electroplated on copper foil and covered with polyurethane to prevent reaction with air}}<br /> |-<br /> | colspan=&quot;2&quot;|<br /> ----<br /> ''Legend''<br /> {| style=&quot;text-align:center; border:0; margin:1em auto;&quot;<br /> |-<br /> | style=&quot;border:{{element color|Primordial}}; background:{{Element color|table mark}};&quot; | [[primordial element]]<br /> |-<br /> | style=&quot;border:{{element color|from decay}}; background:{{Element color|table mark}};padding:0 2px;&quot; | [[radioactive decay|element by radioactive decay]]<br /> |-<br /> | Atomic number color:&lt;br/&gt;&lt;span style=&quot;color:{{element color|Solid}};&quot;&gt;black=solid&lt;/span&gt;<br /> |}<br /> {{Infobox periodic table group/footer| fullpage=Template:Periodic table (alkaline earth metals)}}&lt;noinclude&gt;<br /> {{documentation}}<br /> &lt;/noinclude&gt;</div>

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