Q. 104.2( 5 Votes )

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Answer :

Given: Atomic number of the element= 16


The Electronic configuration can be written as 2, 8, 6


The element has total 3 shells and therefore it will belong to period 3.


Number of valence electrons present = 6


Therefore, The group number will be 10 +6


Group number = 16


Since it has 6 valence electron and requires 2 more electrons to attain stable gas configuration. Therefore, valency will be 2.


Therefore, the electronic configuration of the atom of an element relates to its position in the modem periodic table and valency of an element is calculated on the basis of its atomic number.


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