In a specific reaction, hexachlorocyclotriphosphazene, $\mathrm{N_3P_3Cl_6}$ was reacted with a metal fluoride to obtain mixed halo derivatives namely $\mathrm{N_3P_3Cl_3F}$ (A), $\mathrm{N_3P_3Cl_4F}$ (B), $\mathrm{N_3P_3Cl_3F_3}$ (C), $\mathrm{N_3P_3Cl_2F_4}$ (D), $\mathrm{N_3P_3ClF_5}$ (E). Compositions among these which can give isomeric products are
(d)E, A and B
(a)A, B and C
(b)B, C and D
(c)C, D and E
Answer
Answer: B ✓ checked by 4AB · confidence medium
The source book printed C; on checking, B is correct — see the explanation.
B is printed as Cl₄F, a misprint for Cl₄F₂. Book printed (c).
Explanation
Positional isomers exist only for di-, tri- and tetra-substituted rings — B, C and D (b).