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EEJ MAIN Chemistry QUESTION #5544
Question 1
Identify the incorrect statement among the following:
  • ONCl and $ONO^-$ are not isoelectronic.✔️
  • $O_3$ molecule has a bent shape.
  • Ozone appears violet-black in the solid state.
  • Ozone is a diamagnetic gas.
Correct Answer Explanation
ONCl has 18 electrons and $ONO^-$ (nitrite ion) also has 18 electrons with the same electron count; they ARE isoelectronic. So the statement that they are NOT isoelectronic is WRONG. $O_3$ is indeed bent (bond angle ~117°), ozone solid is violet-black, and ozone is diamagnetic — all correct statements.