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- How can you determine the atomic mass of an unknown metal if you know its density and the dimension of its unit cell? Explain.
- Particle A at Body center & Particles B at corner . Find out its –
(a) Molecular Formula (b) Coordination Number?
3 Non-stoichiometric cuprous oxide, Cu2O can be prepared in laboratory. In this oxide,copper to oxygen ratio is slightly less than 2:1.Can you account for the fact that this substance is a p-type semiconductor?
- How can you determine the atomic mass of an unknown metal if you know its density and the dimension of its unit cell? Explain.
- What makes a glass different from a solid such as quartz? Under what conditions could-(a) quartz be converted into glass (b) Glass into quartz
- Non-stoichiometric cuprous oxide, Cu2O can be prepared in laboratory. In this oxide, copper to oxygen ratio is slightly less than 2:1.Can you account for the fact that this substance is a p-type semiconductor?
- How can we convert –
(a) ZnS structure to NaCl structure
(b) NaCl structure to CsCl structure
(c) CsCl structure to NaCl structure.
- What is meant by Fluorite & Antiflourite structure?
- In the lattice of Oxide Na occupy 2/3 of Octahedral void predict the formula?
- When we dope NaCl with Ba+2 ion , it conduct electricity. Why ?
- Why LiCl become red when Heated in Li vapour & ZnO become Yellow when heated?
- Why FeO is a non stoichiometric compound?
- What are 13-14 compounds . How it can act as n-type & p-type semiconductor?
- What are ferromagnetic substance & what is the effect of heating on it?
- In CrCl3 chloride ions are arranged in cubic close packing . Cr ion occupy tetrahedral void.
(a) What %age of tetrahedral voids are occupied by Cr+3 ion.
(b) What %age of Total voids are occupied by Cr+3 ion.
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