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Q.

X has 4 valence electrons, present in 2nd period, it combines with                

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a

2 Cl atom

b

 2 oxygen atoms

c

3 oxygen atoms

d

Both A, B and C

answer is B.

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Detailed Solution

In all the given choice ,B is the correct choice X has 4 valence electrons, present in 2nd period, it combines with 2 oxygen atoms because the valency of x is 4 i.e.  tetra valency.

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