JEE Main 2026 · 5 Apr · Shift 1, Chemistry question 60

Interstitial compounds (such as TiC, $\ce{Mn4N}$ and $\ce{Fe3H}$):

• They are very hard and melt higher than the pure metals.
• They keep metallic conductivity.
• They are chemically inert and usually non-stoichiometric.

They are not soft, and not ionic. So (B) is the property they do not have.

(B)