A metal M belongs to 13th group in the Modern Periodic Table. Write the valency of the metal.
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A metal M forms an oxide having the formula M2O3. That is the valency of metal is 3. Elements with valency 3 belongs to group IIIA (13) of the periodic table. So,metal M belongs to group IIA and 3rd period of periodic table.Tha t means metal M is Aluminium.Nov 29, 2017
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Electronic configuration - 2 , 8 , 3
Valency = 3
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