Based on the unit cell shown, what is the formula of the structure on the left (i.e. the one labeled “perovskite”)? Explain (in words or calculations) how you know.

Q: Use the figure of band structures to explain why the conductivity of pure metals decreases when…

A:

Q: 13. Show that the maximum packing ratio in the diamond structure is ë/3/16. [Hint: The structure may…

A: NOTE

Q: Consider the following dioxides of fifth-period elements: SnO2, TeO2, and XeO2. (a) Use their common…

A: The penultimate shell in an atom is the second last shell, the largest shell is the valence shell.…

Q: among

A: Dear student I have given answer to your question in the image format.

Q: The unit cell of a compound containing Co and O has a unitcell shown below. The Co atoms are on the…

A: Since both the O atoms are completely inside the unit cell. Hence the contribution of both O to the…

Q: 1. What type of holes do the blue spheres occupy in the ionic solid depicted below? Give evidence to…

A: We have to determine voids of given unit cell and Type of closest packing of given unit cell.

Q: Lattice parameters of α and β phases were calculated from x-ray diffraction measurements performed…

A: A graphical representation of all the states (solid, liquid, gas) under specific conditions is known…

Q: The maximum wavelength of light that a certain silicon photocell can detect is 1.11 μm. (a) What is…

A: The energy difference between the top valence band and bottom of conduction band in terms of…

Q: Can you please answer this with serious detail and depth, as in every last little step explained as…

A: Given structure is shown below,

Q: If Na+ ions were to substitute for magnesium ions in MgO, in order to preserve electroneutrality,…

A: Impurity defects are produced in the MgO crystal. Two Na+ ions replaced one Mg2+ ion for…

Q: Explain what happens when a pure semiconductor made up of Silicon is doped with an Indium atom…

A:

Q: Polyethylene can crystalline in crystallites with the chains aligned in an orthorhombic unit cell…

A: A unit cell is the smallest unit which when repeated in all the directions gives rise to a crystal.…

Q: Calcium carbonate crystals in the form of aragonite have orthorhombic unit cells of dimensions a =…

A:

Q: Determine the empirical formula given the unit cell (the image will also be posted at General). You…

A: The empirical formula of the given unit cell depends on the type of number of atoms present in the…

Q: . Given that the crystal structure of Manganese iodide. It showed 21 bonds at 452 pm and 41 bonds at…

A: The shape of transition metal complexes is determined by the tendency of electron pairs to occupy…

Q: Determine the indices of the crystallographic direction shown below. Express in proper notation.

A:

Q: Potassium nitrate crystals have orthorhombic unit cells of dimensions a = 542 pm, b = 917 pm, and c…

A: From the question, we obtain that- Potassium nitrate crystals have orthorhombic unit cells  a = 542…

Q: What is the origin of Van der Waals forces? Why it is important in the dispersion of ceramic…

A: We use DLVO theory to explain how Van der Waals force among ceramic particles is useful in the…

Q: (a) What kind of packing arrangement is seen in the accompanyingphoto? (b) What is the coordination…

A: (a) In the given photo, each ball in the first layer touches six neighboring balls. The balls in the…

Q: 2. What is glass-ceramic? Please explain the differences between glass and glass & ceramics ?…

A: Answer - Glass-ceramic - a glass-ceramic is a solid material, partly crystalline and partly glassy,…

Q: Which of the following structures is based on the cubic close-packing of cations?

A: Out the given compounds, CsCl is based on the cubic close-packing of cations. The Cs+ or Cl- ions…

Q: Solid CuI2 is unstable relative to CuI at room temperature, but CuBr2, CuCl2, and CuF2 are all…

A: Born haber cycle for CuI.CuI→Cus+12I2g         ∆E1Cus →Cug…

Q: (d) Doping can be used to increase conductivity of the substances, explain with examples. What are…

A: Doping increases the conductivity as follows.

Q: Comparing two FCC metals, one with melting temperature of 857 ºC and one with melting temperature =…

A: A face-centered cubic has atoms at each corner of the cube and six atoms are at each face of the…

Q: Two solids are shown below. One is a semiconductor andone is an insulator. Which one is which?…

A: Since in insulators, the gap between the conduction band and valence band is very high. Hence there…

Q: A simplifed phase diagram for iron is shown below, with the solid part divided into the body-centred…

A: FCC has more dense packing and it has close packed structure.But, BCC is less dense and it is not…

Q: Show that the ratio of cations to anions in the unit cell of AgI corresponds to the ratio of cations…

A: The unit cell structure of silver iodide (AgI) can be given as :

Q: The unit cell of a compound containing Co and O has a unitcell shown below. The Co atoms are on the…

A: Since both the O atoms are completely inside the unit cell. Hence the contribution of both O to the…

Q: R6 metal reacts with Cso to give a compound whose crystal structure consists of a cubic…

A:

Q: Shown in the figure are 3 different crystallographic planes for a unit cell of an imaginary metal…

A: Given:

Q: Draw the planes (011) and (122) in FCC unit cell, their directions and determine the atom packing…

A: FCC UNIT CELL LATTICE In fcc cubic lattice , atoms are arranged in the corners of the crystal…

Q: Crystalline: Diamond ; ____????____ : Graphite

A: Given: Crystalline: Diamond ; ____????____ : Graphite

Q: 2. Indices of planes. Consider the planes with indices (100) and (001); the lattice is fcc, and the…

A:

Q: An element, BCC , shows diffraction peaks at 2theta: 40, 58, 73, 86.8, 100.4 and 114.7:…

A: Introduction: BCC stands for Body Centred Cubic. the atoms in the corner of BCC unit cell do not…

Q: Which of those molecules can be considered as a highly aperiodic crystal

A: A crystal which is not having these properties : ideal, sharp diffraction peaks on the positions of…

Q: At low temperatures, Fe has a Body Centered Cubic (BCC) crystal structure. This phase is rite, a.…

A:

Q: An ideal quantum dot for use in TVs does not contain anycadmium due to concerns about disposal. One…

A: Since the InP has the ZnS type structure, that is fcc, hence no. of ZnS in one unit cell will be 4…

Q: indicate

A: Dear student I have given answer to your question in the image format.

Q: Three-dimensional hexagonal boron nitride is made up of sheets of the two- dimensional material…

A: B2H6 + NH3 (excess) → (BN)x boron nitride

Q: . Match colum A to B         Column A…

A: To:  Match the above-given parameters?

Q: 10. Discuss on the possible metals and their alloys which could be an ideal choice for replacement…

A: The substances that are obtained from the earth's crust and show lustrous, shiny appearance on…

Q: 14. Which of the following reflections would be missing in a bcc lattice: (100), (110), (111),…

A: Unit cell is the basic unit of crystal lattice that join together to form an entire lattice of a…

Q: 02: According to the hard-sphere model, illustrate with draw figure the contributions of atoms in…

A: The hard sphere model of the unit cells give an idea of the atoms present in a unit cell and the…

Q: Draw in unit cubes the crystal planes that have the following Miller indices:

A:

Q: 1. - in ceramics has been reduced by means of various techniques, such as gas condensation. 2. ----…

A:

Q: Briefly state the main differences between the following: 1.Microscopic structure and macroscopic…

A: 1. Microscopic structure belongs to the species which are microscopic in nature. Those are not…

Crystallography

Crystallography is the category of science that focuses on the atomic and molecular arrangements with their bonding constituting the crystal structure. It is derived experimentally and originated in the year 1912. It is a combination of two words; those are crystal, meaning a cold drop, and graph, meaning writing.