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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 catalytic behaviour of transition metals and their compounds is ascribed mainly due to ____________.
The correct order of increasing oxidizing power in the series
What are transition metals? Give four examples.
Calculate the number of unpaired electrons in Ti3+, Mn2+ and calculate the spin only magnetic moment.
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.
Compare the ionization enthalpies of the first series of the transition elements.
Why first ionization enthalpy of chromium is lower than that of zinc?
Transition metals show high melting points why?
