A) They retain metallic conductivity
B) They are chemically reactive
C) They are much harder than the pure metal
D) They have higher melting points than the pure metal
Correct Answer: B
Solution :
Interstitial compounds are obtained when small atoms like H, B, C, N etc., fit into the lattice of other elements. These retain metallic conductivity. These resemble the parent metal in. chemical properties (reactivity) but differ in physical properties like hardness, melting point etc.
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