the atomic number of platinum is 74. what is the effective atomic number of Pt in [PtCl6]^2- ?

Q: Divalent ionic crystals. Barium oxide has the NaCl structure. Estimate the cohesive energies per…

A: For the given crystal Ba+O​​​​​​-​​ The required net amount of energy to form Ba+ and O​​​​​​- is…

Q: Which crystalline solid would you expect to have the highestmelting point?a) Au(s) b) H2O(s) c)…

A: Temperature, at which solid phase of any compound converts into liquid phase is known as melting…

Q: Explain the following terms with one example each :(a) Ferrimagnetism…

A: a) Ferrimagnetism It is a property of a substance in which its magnetic moments of the domains are…

Q: In the heating of most metal alloys, melting begins at a certain temperature and concludes at a…

A: The solidus is the highest temperature at which an alloy is solid – where melting begins.The…

Q: Lithium crystallizes in a bcc structure with an edge length of 3.509 Å. Calculate its density. What…

A:

Q: 8.20 How many electrons per atom are delocalized in the sea of electrons model for the following…

A: In the electron sea model, atoms in a metallic solid lose their outer electrons and form a regular…

Q: Polonium is the only metal that forms a simple cubic crystal. Its coordination number is a. 4 b.…

A: Coordination no. Of polonium is six. Beacuse it forms simple cubic unit cell.

Q: Niobium has an atomic radius of 0.1430 nm and a density of 8.57 g/cc. What is the crystal structure…

A:

Q: Which element or elements are alloyed with gold to makethe following types of “colored gold” used in…

A: a) White gold is an alloy of gold and at least one white metal (usually nickel, silver, or…

Q: 4.  The Cesium ions has 8 Chlorine ions on its nearest neighbor, what is the coordination number of…

A: Coordination number  also called legacy is the number of atoms/ions that are hold by a central atom…

Q: [Ni(NH3)4(H,O)2]Cl,? What is the coordination number of the central metal 1on in O 2

A: Since you have posted multiple questions, we are entitled to answer the first only.

Q: Would you expect the alloy PdB0.15 to be a substitutional alloy or an interstitial alloy?

A: Please find below the pic to understand the difference between  a substitutional alloy and an…

Q: Alloys have numerous advantages in industrial applications. Which combination of metals is…

A: A metallic substance composed of two or more metals is alloy. Here we have to tell which metals…

Q: 3. In solid NaCI, the coordination numbers of the Na+ and CI- ions are, respectively: *

A: Given: Sodium Chloride crystal To find: Coordination number of sodium and chloride ion.  Solution:…

Q: A common feature in high-temperature ceramic superconductors is a Cu-0 sheet that serves as a…

A:

Q: C, graphite $) Caiamona(s) Cdiamon

A: Enthalpy of combustion is amount of energy released after 1 mole of substance completely burns in…

Q: How do you find the coordination number for [Al(OH)4(H2O)2]-?

A: Coordination number is the number of atoms, ions, or molecules that a central atom or ion holds as…

Q: An element has a density of 10.25 g/cm3 and a metallic radius of 136.3 pm. The metal crystallizes in…

A: For BCC lattice root 3 a = 4r where a = edge length and r = radius  No. of atoms in BCC (Z) = 2…

Q: An element occurs in bcc structure. It has a cell edge length of250 pm. Calculate the molar mass if…

A: Given: Edge length, a = 250 pm = 250*10-10 cm Density = 8 g cm-3 For bcc cell, number of atoms, Z =…

Q: What is the coordination number of the crystal structure shown below?

A: Here . Given crystal is face centred cubic lattice. (fcc)

Q: What are the applications of superconductors?

A: Superconductivity:The ability of certain metals and their compounds, alloys to conduct the…

Q: Niobium crystallizes in BCC structure and has a density of 8.55 g/cm^3. Calculate its atomic radius…

A: Given  Structure type = BCC density ( d ) = 8.55 gram/cm3 Atomic mass ( M )  = 93 gram/mole Atomic…

Q: Copper had the most essential industrial applications of the three coinage metals [Group 1B(11). It…

A: Given : Lattice structure of copper = FCC Radius of copper atom = 127.81 pm = 127.81 X 10-10 cm…

Q: The density of lead is 11.35 g cm-3 and the metal crystallizes with fee unit cell. Estimate the…

A: Given: Density of lead=11.35 g cm-3 mass of lead=207 g mol-1 NA= 6.02×1023 mol-1 To find: The radius…

Q: what is the coordination number of cobalt in [Co(en) (NH3)3 Br]Cl2 ?

A: The central cobalt atom is bonded to ethylenediamine is a bidentate ligand, which means that it uses…

Q: What is the arrangement of the Ca2+ ions (white spheres)? (A) BCC (в) FCC с) НСР D SC

A: The lattice given is,

Q: Calculate the density of aluminum, given that it has an fcc crystal structure,an atomic radius of…

A: Firstly, calculate the edge length. For FCC, the relation between the radius and edge length (a) is:…

Q: PdB0.15 is a which type alloy

A: In substitutional alloy some of the atoms composing the metallic crystals aresubstituted with atoms…

Q: The karat scale used to describe gold alloys is based onmass percentages. (a) If an alloy is formed…

A: The karat scale is used to describe gold alloys is based on mass percentages.  It is given that…

Q: Which part in the figure can be a grating or prism? O A O B OD

A: Instruments for analyzing light and for determining the identity and structure of materials that…

Q: The Cesium ions has 8 Chlorine ions on its nearest neighbor, what is the coordination number of…

A: In this question, we will determine the coordination number of Cesium ion.  You can see the solution…

Q: What is the arrangement of the Ca2+ ions (white spheres)? A BCC в) FCC HCP D sc

A: Arrangement of the Ca2+ ions (white sphere) = ?

Q: Clausthalite is a mineral composed of lead(II) selenide. The mineral adopts a NaCl octahedral-type…

A: First, calculate the mass of each unit cell. It is given by: mass = 4(Pb2+) + 4(Se2-)= 4(207.2amu) +…

Q: A hypothetical element, Le, has a body centered cubic structure with a density of 6.93 g/cm?.…

A:

Q: What is the coordination number of the meta a. [Fe(CO)s]: b. [Ag(NH3)2]": c. [PtCl3(NH3)3]*:

A: "Since there are multiple sub-parts in this question and it is not mentioned that which one has to…

Q: Calculate the radius of palladium atom in nm, given that Pd has an FCC crystal structure, a density…

A:

Q: >Explain why metals such as Au and Ag are found in their elemental states in nature, but metals…

A: Given,Metals such as Au and Ag are found in their elemental states in nature, but metals like Na and…

Q: What is the coordination number of the crystal structure shown below? O A. 4 В. 8 O C. 10 O D. 12

A: The crystal structure is FCC ( Face cubic cell ) it is unit cell having atoms in all the corners and…

Q: How do some pairs of metals form alloys with structures that depend on the relative composition of…

A: An alloy is a metallic substance composed of a metal with at least one other metal metal or…

Q: Differentiate AAS, AAS-Graphite, FES and ICP-MS

A:

Q: what is the best coating layer of nanoparticles used to coat the biomaterials alloys?

A: Coating is done primarily due to their long-term stability and excellent mechanical properties.…

Q: Coordination number in ceramics crystal structure refers to the number of _1 surrounding alan _2 1 =…

A: A multiple choice question based on ceramic structure, which is to be accomplished.

Q: The density of tungsten is 19.3 g/cm3. If the metallic radius of tungsten is 139 pm, what is the…

A: Dear Student