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प्रश्न
What are interstitial compounds?
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उत्तर
1. An interstitial compound or alloy is a compound that is formed when small atoms like hydrogen, boron, carbon or nitrogen are trapped in the interstitial holes in a metal lattice.
2. They are usually non-stoichiometric compounds.
3. Transition metals form a number of interstitial compounds such as TiC, ZrH1.92, Mn4N, etc.
4. The elements that occupy the metal lattice provide them new properties.
- They are hard and show electrical and thermal conductivity.
- They have high melting points higher than those of pure metals.
- Transition metal hydrides are used as powerful reducing agents.
- Metallic carbides are chemically inert.
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संबंधित प्रश्न
Which one of the following ions has the same number of unpaired electrons as present in V3+?
The magnetic moment of Mn2+ ion is ____________.
The catalytic behaviour of transition metals and their compounds is ascribed mainly due to ____________.
What are transition metals? Give four examples.
Complete the following.
\[\ce{MnO^2-_4 + H^+ ->?}\]
Explain briefly how +2 states become more and more stable in the first half of the first-row transition elements with increasing atomic numbers.
Explain the variation in `"E"_ ("M"^(3+)//"M"^(2+))^0` 3d series.
The `"E"_("M"^(2+)//"M")^0` value for copper is positive. Suggest a possible reason for this.
Which metal in the 3d series exhibits +1 oxidation state most frequently and why?
Transition metals show high melting points why?
