The configuration of element E is : 2, 8, 6
(a) Since it has 6 valence electrons. So, it will belong to group 6.
(b) Since element E has three valence shells, so it will belong to period 3.
(c) The number of valence electrons present in the element E is 6.
(d) The valency of element E is 2 because it requires 2 more electrons to complete its stable gas configuration.
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