If an element has valency 2 then the group of Modern Periodic Table to which this element belongs is

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Solution

The correct option is D 2
An element with a valency of two can either lose or gain two electrons. If it loses two electrons, then it belongs to group 2 and if it gains two electrons, then it belongs to group 16 of the Modern Periodic Table.
Hence, the correct answer is option (d).

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