The electronic configuration of an element ‘X’ is 2,8,6. To which group and period of the modern periodic table
does ‘X’ belong .State it valency and justify your answer in each case.
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16 grp(outermost shell have 6 electrons)
4 period (have 3 shells)
valancy is=2(8-6=2)
4 period (have 3 shells)
valancy is=2(8-6=2)
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