MCQ
The absolute configuration of given is :


- A$(2S,3S)$
- B$(2R,3R)$
- C$(2R,3S)$
- ✓$(2S,3R)$


Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
$x$ is
Reason : Transparent bead $(NaBO_2 + B_2O_3)$ forms coloured bead with coloured cation.