Interstitial compounds are formed by

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(D) Interstitial compounds are those in which small atoms like $H, C, N$ or $B$ are trapped inside the crystal lattice of transition metals. Transitio

Vedclass · Accepted Answer

All of the above

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(D) Interstitial compounds are those in which small atoms like $H, C, N$ or $B$ are trapped inside the crystal lattice of transition metals. Transition metals like $Fe, Co, Ni$ and others have large atomic sizes and empty interstitial sites in their crystal structures,which allow them to form these compounds. Since $Fe, Co$,and $Ni$ are all transition metals capable of forming such structures,the correct answer is all of the above.

List-$I$	List-$II$
$(1) \ \text{Cr}$	$(A) \ [\text{Ar}] \ 3d^8 4s^0$
$(2) \ \text{Fe}^{2+}$	$(B) \ [\text{Ar}] \ 3d^{10} 4s^1$
$(3) \ \text{Ni}^{2+}$	$(C) \ [\text{Ar}] \ 3d^6 4s^0$
$(4) \ \text{Cu}$	$(D) \ [\text{Ar}] \ 3d^5 4s^1$
	$(E) \ [\text{Ar}] \ 3d^6 4s^2$

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