MCQ
Which of the following is Teflon
- ✓${[ - C{F_2} - C{F_2} - ]_n}$
- B$C{F_2} = C{F_2}$
- C$CF \equiv CF$
- DNone of these
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Statement $I :$ In $CuSO _{4} .5 H _{2} O , Cu - O$ bonds are present.
Statement $II :$ In $CuSO _{4} .5 H _{2} O$, ligands coordinating with $Cu$ $(II)$ ion are $O$-and $S$-based ligands.
In the light of the above statements, choose the correct answer from the options given below
($\Delta _o =$ crystal field splitting energy in an octahedral field, $P =$ Electron pairing energy)

$(i)$ $F_2 + 2X^-\to 2F^-+ X_2 (X = Cl, Br, I)$
$(ii)$ $Cl_2 + 2X^-\to 2Cl^-+ X_2 (X = Br, I)$
$(iii)$ $I_2 + 2Br^-\to Br_2 + 2I^-$
option which have only the Correct set of reaction is.