Question

write a note on interistial compunds?
chemistry 12 plesae tell me answer

Answer 1

Answer:

Interstitial compounds: They are those compounds of the transition metals which are formed when small atoms like H,C or N are trapped inside the interstitial vacant spaces in the crysal lattices of the metals. Some of the examples of interstitial compounds are TiC, TiH

1.73

, Mn

4

N, Fe

3

H etc.

The interstitial compounds have high melting point due to the following reasons.

∙ They are very hard.

∙ They are chemically inert, and

∙ The presence of the foreign atoms stablizes the crystal structure.

Answer 2

Answer:

An interstitial compound, or interstitial alloy, is a compound that is formed when an atom with a small enough radius sits in an interstitial “hole” in a metal lattice. Examples of small atoms are hydrogen, boron, carbon and nitrogen. The compounds are industrially important

Explanation:

As vacant spaces of the transition metals are filled up by small atoms, these compounds are hard and rigid.

The chemical properties of the parent transition metals are not altered during the formation of interstitial compounds.

However, there are various changes in the physical properties such as density, rigidity, hardness, malleability, ductility, electrical conductivity etc.

Steel and cast iron are the interstitial compounds of iron which are formed with carbon. In the formation of these compounds, the malleability and ductility of iron are lost to a great extent, but the tenacity of the metal increases.