(a) Determine the number of calcium ions in the chemicalformula of the mineral hardystonite, CaxZn(Si2O7). (b)Determine the number of hydroxide ions in the chemicalformula of the mineral pyrophyllite, Al2(Si2O5)2(OH)x.

Q: estimate the fraction of electrons above fermi level in sodium and copper at room temperature

A:

Q: What is the colour of FeSO4.7H2O crystals? How does this colour change upon heating? Give balanced…

A: The chemical formula of ferrous sulphate heptahydrate is FeSO4.7H2O and it can be also called as…

Q: to

A: The compound FeCaSi2O6 have a polymer unit called Si2O6⁴- .    This unit is called inosilicate.

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: What is the oxidation number of sulfur in Na2S2O5?

A: We know some Oxidation state like, Oxidation state of Oxygen = -2  Thus 5 oxygen means 5 x (-2) =…

Q: What is the composition, in atom percent, of an alloy that consists of 30 wt% Zn and 70 wt% Cu?…

A: Atom % of Zn = Czn x AcuCzn x Acu x Ccu x Aznx100                           = 30 x 63.5530x63.55…

Q: What is the mass percent of silicon in the mineral orthoclase (KAlSi3O8)?

A: Mass percentage = mass of the atommass of compound ×100%

Q: Consider the coordination compound (NH4)2[Os(en)(CN)4], the coordination number (C.N.) and oxidation…

A:

Q: Th e elements Cu, O, La, Y, Ba, Tl, and Bi are all found in high-temperature ceramic…

A: The atomic number of Cu is 29. hence the below shorthand noble gas configuration of Cu ( note : Cu…

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: How many Mn4 + and O2- ions are in the unit cell of the rutile MnO2?

A: The rutile structure for MnO2 can be given as follows:

Q: What is the significance of leaching in the extraction of aluminium ?

A:

Q: Distinguish  between the bond thos exist  In CsCl and SiC Crystals.

A: Chemical Bond: Chemical bonds are type of forces which hold two or more than two atoms to form a…

Q: List the major classes of minerals and discuss the main chemical characteristic of each class.

A: Minerals are classified based on their chemical constitution. Mineral resources are finite and…

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: Calculate the composition, in weight percent, of an alloy that contains 105 kg of iron, 0.2 kg of…

A:

Q: An AX ceramic compound has an HCP crystal structure. If the radii of the A and X ions are 0.12 and…

A:

Q: What is species of a mineral

A: naturally occurring inorganic substances with particular arrangement of atoms with definite chemical…

Q: You would like to select a material for electrical contacts in an electrical switching device which…

A: The materials that have to be used for electrical contacts in an electrical switching device must…

Q: 6. Draw a chain silicate structure containing four tetrahedra. Show the numbers of Si atoms, O…

A: Basic unit of silicate, [SiO4]4- tetrahedron, can form single and double chains and sheets.  The…

Q: What are the applications of superconductors?

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

Q: What are some of the structural differences between quartz and amorphous SiO2?

A: A question based on solid state, which is to be accomplished.

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: What is the composition, in atom percent, of an alloy that consists of 92.5 wt% Ag and 7.5 wt% Cu?…

A: Composition of silver is:

Q: Adding small quantities of boron may increase the electrical conductivity of antimony. With the aid…

A: Antimony is symbolised as Sb is a gr-15 element. It's valence shell electronic configuration is…

Q: Define hydroxyapatite

A: Hydroxy: This word is used in the name of a chemical compound when there is the presence of OH…

Q: Write the role of the following: (i) Iodine in the refining of zirconium (ii) Silica in the…

A: i) When impure zirconium is heated with the iodine, it will form volatile compound ZrI4, which on…

Q: Basic physical properties of sulphate group minerals and economical use of these properties. Write…

A: Sulphate group minerals have sulphate ion (SO42-) in their structures. It occurs as gangue minerals…

Q: Explain the functionalization methods of carbon nanotubes.

A: The structure of a carbon nanotube is formed by a layer of carbon atoms that are bonded together in…

Q: An AX ceramic compound has an HCP crystal structure. If the radii of the A and X ions are 0.114 and…

A: We need to find density of material.

Q: Given the compound: [Co(en)2(OH)2]OH, what is the coordination number for Co? 3

A: We have to predict the coordinator number for the metal Co.

Q: Using Table 22.1, predict the structure of each of the fol- lowing silicate minerals (network,…

A: Following structures are

Q: Draw the structure of Na2S4O6 and what is O.N of sulphur in this compound?

A: The structure of Na2S4O6 can be drawn as follows:

Q: Pyrite (FeS2) can be leached by oxygen in sulfuric acid solution to form ferric sulfate. Write the…

A: A balanced reaction is the reaction in which equal number of atoms are present on both the sides of…

Q: Consider the smelting of iron ore which consists of Fe2O3 and Fe3O4. If Fe is produced in the pig…

A:

Q: the substance not likely to contain CaCO3 is : a  dolomite b  sea shells c  a marble statue d…

A: Dolomite is a calcium magnesium carbonate with a composition of CaMg(CO3)2.Sea shells are…

Q: 9. Amorphous silica, SiO2, has a density of about 2.2 g/cm³, whereas the density of crystalline…

A: Answer - The amorphous material has less density then the crystalline material because the amorphous…

Q: Predict the structure and label the charges on the cations in the mineral hedenbergite, CaFeSi2O6

A: Molecular geometry is the 3-D representation of the molecule in a space. In terms of electron…

Q: Silicones are classified as O a. Elastomers O b. Cast iron O c. Thermoplastics O d. Ceramics

A: Silicones is synthetic elastomer that show viscosity and elasticity.

Q: Write the reactions of the hydrolysis of sodium tripolyphosphate (Na5P3O10) in aqueous solution.

A: Sodium triphosphate undergoes hydrolysis to form sodium tetraphosphate and sodium hydroxide. This…

Q: What is the details programme of the traineeship in mineral processing?

A: details programme of the traineeship in mineral processing:

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

A:

Q: Give answers of the following. a. Which allotropic forms of carbon are conductor and which are…

A:

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: 5. What is the composition, in atom percent, of an alloy that consists of 30 wt% Zn and 70 wt% Cu?

A:

Q: Draw a Lewis electron-dot diagram for the cyclosilicate ion (Si,O), which forms part of the…

A: In the Si6O1812- molecule, the oxygen ring present in the center of the unit. Here all oxygen atoms…

Group 14 Elements

The following elements come under group 14 of the periodic table.