Reaction with Alkalis

Q.
Compound (A) and (B) are:-

1. $NaCl{O}_3,NaClO$
2. $NaOC{l}_2,NaOCl$
3. $NaCl{O}_4,NaCl{O}_3$
4. $NaOCl,NaCl{O}_3$

Q. Chlorine reacts with hot and conc. $NaOH$ and produces compounds (X) and (Y). Compound (X) gives white precipitate with $AgN{O}_3$ solution. The average bond order between $Cl$ and $O$ atoms in (Y) is