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Sahdev Sharma 8 years, 4 months ago
Point defects are where an atom is missing or is in an irregular place in the lattice structure. Point defects include self interstitial atoms, interstitial impurity atoms, substitutional atoms and vacancies.
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Reducing agent-Substances which removes oxygen atom or adds hydrogen atom in a chemical equation
Oxidizing agent-Substances which adds oxygen atom or removes hydrogen atom in a chemical equation
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Poulami Dasgupta 8 years, 4 months ago
Isotopes are elements with same atomic number but different atomic weight . For example , 12C6,14C6 are two isotopes of carbon with same atomic number 6 but different atomic weight
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| Reduction with carbon | Electrolytic reduction |
| 1. carbon is used as a reduction agent. | 1. Electrolysis process is used for reduction. |
| 2. Oxide of moderately reactive metals (e.g., Zn, Fe, Cu, Ni) are reduced by carbon. | 2. Oxide (and chlorides) of highly reactive metals (e.g., Al, Na, Mg, Ca) are reduced by this process. |
| 3. In this process, the metal oxide is mixed with carbon (coke) and heated in a furnace. ZnO + C → Zn + CO |
3. In this process,molten metal oxide is electrolysed in an electrolytic cell where the cathode acts as a powerful reducing agent by supplying electrons to reduce metal ions into metal.
Al3+ + 3e- (Electrolytic reduction) → Al (Aluminium metal) |
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Rishabh Agarwal 8 years, 4 months ago
1Thank You