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Which of the following set of quantum nu...

Which of the following set of quantum number is/are CORRECT for last electron of phosphorous :

A

Maximum number pof atom present in same plane in `BrF_(5)` are 5

B

In `O(SiH_(3))_(2) p_(n)-d_(n)` back bonding is present while in `BF_(3) P_(n) -P_(n)` back bonding is present

C

Pyroxene chain silicate and 5 memebered cyclic silicate both have 2 number of corner shared per tetrahedron.

D

Number o flone pair on central atom of `ICI_(4)^(ominus)` is 2

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B, C, D
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