JEE Advanced · 2024 · 26 May 2024 · Paper 1 · Chemical Bonding and Molecular Structure

Molecules that do NOT follow the octet rule: NO (odd electron), ${\mathrm{NO}}_2$ (odd electron), ${\mathrm{BCl}}_3$ (electron deficient, only 6 electrons around B), and ${\mathrm{H}}_2{\mathrm{SO}}_4$ (expanded octet, 12 electrons around S). Option (A): ${\mathrm{CO}}_2$, ${\mathrm{C}}_2{\mathrm{H}}_4$, and HCl follow octet rule (3 out of 4). Option (D): ${\mathrm{CO}}_2$, ${\mathrm{O}}_3$, and ${\mathrm{C}}_2{\mathrm{H}}_4$ follow octet rule (3 out of 4).