How does the sea-of-electrons model explain the high electrical conducitivity of gold ?

Q: Calculate the atomic packing factor for diamond (refer to Fig. 15C.15); assume that the atoms touch…

A: In crystallography, atomic packing factor, packing efficiency or packing fraction is the fraction of…

Q: 4. NaCl(ag) + Kļcag) → NR

A: The following answer is correct or not if incorrect then write complete balance equation with states…

Q: Explain how homogeneous and heterogeneous alloys differ. Describe the differences between…

A: An alloy is a uniform mixture. It is made up of two or more chemical elements, of which at least one…

Q: Write the balanced chemical equation for conversion of Al(s) to KAl(SO4)2·12H2O(s) in aqueous…

A: The balanced equation is the equation in which the number of atoms of each elements are equal at…

Q: Substance Appearance Melting Point Electrical Conductivity Solubility in Water X lustrous, malleable…

A: Given Substance Appearance Melting Point Electrical Conductivity Solubility in water X…

Q: The edge length of sodium that crystallizes in the BCC structure is 0.492 nm. Calculate the atomic…

A: In a crystalline structure, such as the body-centered cubic (BCC) arrangement, the atomic…

Q: Ca2+ in Cao,

A: In Li2O there is Li+ and O2- is present hence each oxygen atom is valance by 2Li+ ions... Hence in…

Q: 48) An unknown hydrate of zinc sulfate, ZnSO4 • XH2O, is heated to give 30.8% water. What is the…

A: The unknown hydrate of zinc sulfate is given by the formula- ZnSO4 • x H2O Water obtained after…

Q: In XCI, which crystallizes in NaCl structure, the sum of the anionic and cationic radii is found to…

A:

Q: Silicon has a face-centred cubic structure with two atoms per lattice point, just like diamond. At…

A: Given : a = 543.1 pm

Q: The ionic radii of the Mg21 and 022 ions are 0.86 Å and 1.26 Å, respectively. Given that the…

A:

Q: Radii were reported as follows: Ti4+ = 60 pm; O2‒ = 140 pm. Based on this, tell as much as you can…

A: TiO2 has  a tetragonal geometry.  TiO2 is a fluorite structure that means AB2 type formula.…

Q: Identify the set that contains compounds that form an ionic solid, a molecular solid, and a…

A: Option  (A) is the correct answer that is  Li2O , B2O3  , BeO.

Q: What is the contribution of the labelled S2- ion on the face of the lattice structure to the formula…

A: We have to identify the contribution of marked S2- in the crystal lattice.

Q: Name three metals and three nonmetals that are very likely to form ionic compounds. Write formulas…

A: Ionic compounds : Ionic compounds  are those crystalline solids which are formed by ions which are…

Q: Compare and Contrast the properties of Lithium Carbonate and Water, including Lewis structures,…

A: To find and compare different properties of Li2 and H2O.

Q: alloys are prepared with a view to impart some desirable properties. what are these properties?

A: The mixture of two or more elements present in a fixed composition in which major component is metal…

Q: Type of clay is found to be 48% silica. A held sample of this clay is 15% water. What is the mass…

A: Please find your solution below : Mass percent is a way of expressing the composition of a substance…

Q: Which groups of elements have the best and which the poorest electrical conductivities? Explain.

A: For an element to conduct electricity, it must have free electron to move around.

Q: What is semi-conductor?

A: Conductors are those substances which allow the flow of heat and electricity through them while…

Q: Which of the following items are isostructural? A. NO3– B. NO2– C. NO2+ D. O3

A: Isostructural species have same shape and hybridization at central atom.

Q: The volume of a BCC cell is 2.6 x 10-25 m³. Determine the atomic radius in nanometers. O 2.764 nm O…

A: Given that : The unit cell is BCC Volume = a3 = 2.6×10-25 m3 where a= unit cell edge length r =…

Q: Answer the fóllowing questions: |(a) If the crystal lattice constant for a metal is equal to (4.5…

A:

Q: Draw a Lewis electron-dot diagram for the disilicate ion (Si2O9 ). What changes in this structure…

A: Draw and compare Lewis structures for the disilicate ion, the diphosphate ion, and the disulfate…

Q: Calculate the lattice enthalpy of AgCl (s) using the following thermodynamic data. Note that the…

A: Lattice enthalpy : The amount of energy required to completely separate one mole of the solid ionic…

Q: BaTiOg has the perovskite structure shown below. The ionic size of Ba2", Ti*, and O2 are 0.161 nm,…

A:

Q: Explain the phase diagram of CaO-MgO.

A: we have to discuss the phase diagram of CaO - MgO.

Q: In the BCC crystal structure, atoms touch along which direction? O [111] O [011] O (001) O (111) O…

A: In this question, we have to choose the correct answer from the given option.

Q: Can sodium nitrite form H-bonds with water?

A: Sodium nitrite is NaNO2  It is an ionic compound

Q: Crystals of a substance changed their colour on heating in a closed testtube but regained it after…

A: A chemical reaction involves the reactants, substrates, catalyst, temperature-pressure conditions,…

Q: True or false? SEM can investigate the crystalline structure of an object

A: SEM microscope can be defined as a  microscope that scan the image of an object.

Q: What is the role of methanol in the deposition of thin films of semiconductor materials via Aerosol…

A:

Q: What is Inorganic Chemistry?

A:

Q: GaAs is a compound semiconductor commonly used for LEDs. Talk about the chemical bonds and crystal…

A: Gallium arsenide(GaAs) is used to make LED thats because it makes PN junctions in a very efficient…

Crystal Lattices and Unit Cell

Consider a crystal. The regular and repeating pattern of constituent particles is the most distinguishing feature of crystalline solids. A crystal lattice is formed when these particles are replaced with representative points. The three-dimensional arrangement of constituent particles is known as a crystal lattice. Unit cell is that the smallest portion of a space lattice which when repeated in several directions, generate the whole lattice. Unit cell is a building block of a lattice. It is the smallest unit of cell.