Physics, asked by puraniksiddhant0, 6 months ago

A metal forms an oxide having the formula M O3. It belongs to the third period of the modern periodic table. Write The Atomic number and valency of the metal.

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Answered by Anonymous

Answer

Period no. = no. of shells, so n = 3 From the formula M2O3 its valency is 3. Since it is a metal, its valence shell has 3 electrons. So its electronic configuration is 2, 8, 3 Atomic number =13 Hence the metal is Aluminum with valency.

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