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Variable Valency Representing

An element ...

Question

An element ‘x’ belongs to 3^rd period & 16^th group of the modern periodic table.
Molecular formula of the compound when x reacts with hydrogen

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Solution

Dear Student,

(a) The element x is in period 3 and group 16 so it will have 3 shells and the number of valence electrons = 6.
X will have a gain two electrons to form X ^2- . and so it will combine with H to form H₂X .

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