Thursday, November 20, 2008

Group 2

* Group 2 elements are known as alkaline earth metals.

* They can form strong alkali and they occur widely on earth crust.

* They are metals.

* They have melting points and densities that are quite low for metals.

* They react with air, water or steam to form oxides and hydroxides.

* They show the same reactivity trend as group 1, increasingly reactive as you go down the group.

* They form compounds in which the metal has a +2 ion.

* They form white or colorless compounds which gives colorless solutions.

* The alkaline earth metals are reactive, but less reactive than the alkali metals.

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