8/19/2019 Group 2A Periodic Table

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Name: Mengheng LIM

ID: 12020303 

CE

Group 2A: Alkaline Earth Metals

Characteristics:

  Solid at room temperature

  Typical metallic properties

  Harder denser and higher melting temperature compared to alkali metals

Chemical properties:

 

Less reaction activity compared to alkali metals

  They tend to lose 2e- from their outer s-orbital and form 2+ ion.

  The ionization energy required to remove the electrons are decrease from top to

bottom in the group of 2A in periodic table

  Except Beryllium, others elements in the same group can react with H20 to form Base

and H2