a metal m has a valency OF 2 AND M FORMS A COMPOUND WITH CARBONITE
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Explanation:
Period no. = no. of shells , so n = 3
From the formula M
2
O
3
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 3.
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