13X27 1.name the element 2. it's valency 3.its atomic number 4.is it metal or non-metal
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if its valency is 3 and the atomic number is 4 then it would must be an isotope of beryllium having 3 electrons because according to basic study of atomic structure we would say that the the Liam should have two electrons in the outermost cell in the S block of Modern Periodic Table.
it is a metal line the second period and the second group of the modern periodic table.
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