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Comment. Collect melting points of solid water, ethyl alcohol, diethyl ether and methane from a data book. What can you say about the intermolecular forces between these m... 3 years ago Shilpi98 class 12 cbse ncert the solid state How can you determine the atomic mass of an unknown metal if you know its density and the dimension of its unit cell? Explain. 3 years ago Shilpi98 class 12 cbse ncert the solid state (i) What is meant by the term 'coordination number'? (ii) What is the coordination number of atoms: (a) in a cubic close-packed structure? (b) in a body-centred cubic structure? 3 years ago Shilpi98 class 12 cbse ncert the solid state Classify each of the following solids as ionic, metallic, molecular, network (covalent) or amorphous. 3 years ago Shilpi98 class 12 cbse ncert the solid state What makes a glass different from a solid such as quartz? Under what conditions could quartz be converted into glass? 3 years ago Shilpi98 class 12 cbse ncert the solid state Define the term 'amorphous'. Give a few examples of amorphous solids. 3 years ago Shilpi98 class 12 cbse ncert the solid state What type of substances would make better permanent magnets, ferromagnetic or ferrimagnetic. Justify your answer. 3 years ago Shilpi98 class 12 cbse ncert the solid state A group 14 element is to be converted into n-type semiconductor by doping it with a suitable impurity. To which group should this impurity belong? 3 years ago Shilpi98 class 12 cbse ncert the solid state Ionic solids, which have anionic vacancies due to metal excess defects, develop colour. Explain with the help of a suitable example. 3 years ago Shilpi98 class 12 cbse ncert the solid state Explain how vacancies are introduced in an ionic solid when a cation of higher valence is added as an impurity in it. 3 years ago Shilpi98 class 12 cbse ncert the solid state What type of stoichiometric defect is shown by (i) ZnS (ii) AgBr 3 years ago Shilpi98 class 12 cbse ncert the solid state What type of defect can arise when a solid is heated? Which physical property is affected by it and in what way? 3 years ago Shilpi98 class 12 cbse ncert the solid state An element with molar mass 2.7 x 10^-2 kg mol^-1 forms a cubic unit cell with edge length 405 pm. If its density is 2.7 x 10^3 kg m^-3, what is the nature of the cubic unit cell? 3 years ago Shilpi98 class 12 cbse ncert the solid state Which of the following lattices has the highest packing efficiency (i) simple cubic (ii) body-centred cubic and (iii) hexagonal close-packed lattice? 3 years ago Shilpi98 class 12 cbse ncert the solid state A compound is formed by two elements M and N. The element N forms ccp and atoms of M occupy 1/3rd of tetrahedral voids. What is the formula of the compound? 3 years ago Shilpi98 class 12 cbse ncert the solid state A compound forms hexagonal close-packed structure. What is the total number of voids in 0.5 mol of it? How many of these are tetrahedral voids? 3 years ago Shilpi98 class 12 cbse ncert the solid state What is the two dimensional coordination number of a molecule in square close packed layer? 3 years ago Shilpi98 class 12 cbse ncert the solid state Explain how many portions of an atom located at (i) corner and (ii) body-centre of a cubic unit cell is part of its neighbouring unit cell. 3 years ago Shilpi98 class 12 cbse ncert the solid state Distinguish between Face-centred and end-centred unit cells. 3 years ago Shilpi98 class 12 cbse ncert the solid state Distinguish between Hexagonal and monoclinic unit cells. 3 years ago Shilpi98 class 12 cbse ncert the solid state Page 2 / 5 Prev 1 2 3 4 5 Next Share: Super Globals Requests: Server: Options and Features route: community use_home_url: url: https://eanshub.com/community/ pageid:187 default_groupid: 3 2022 How Can We Help? Δ Home About Us Contact Us Privacy Policy Term of Use Copyright © 2020 Eanshub All Rights Reserved