Which substance has the highest melting point?     Kr     Cl 2     Mg     SiO 2 (silica)     C 5H 12

Q: Which of the following compounds is likely to have the lowest melting point? NaCl CS2 Pb…

A: Melting point: The temperature at which a solid substance melts to achieve liquid state. Melting…

Q: s of an unknown crystalline substance showed that it is hard, has a high melting point, and is…

A: The compound is hard, has a high melting point, and is non-conducting unless melted means it shows…

Q: Dolomite bricks are used in the linings of furnaces in the cement and steel industries. Pure…

A: It is the simplest formula for a molecule i.e. Glucose (C6H12O6) has an empirical formula of CH2O.

Q: A (made-up) metal has a face-centered cubic crystal structure. Its density is 20.5 g/cm 3. Its molar…

A: For the FCC cubic,  Density = 20.5 g/cm3 Molar mass = 189 g/mol

Q: The lattice structure of NaCl is provided below. Na ta) What is the coordination number of Na+ of if…

A: Coordination number is the total number of oppositely charged ions that surround a given ion. In…

Q: Some hypothetical metal has simple cubic crystal structure. If its atomic weight is 67.1 g/mol and…

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: Which of the following compounds would you expect to have the lowest melting point? CaO H2O Na2O…

A: Ionic compounds with higher charges have higher melting point due to strong intermolecular forces…

Q: Nickel crystallizes in the face-centered cubic (FCC) lattice. The density of the metal is 8902…

A: The face-centered unit cell has an atom in the middle of each face of the cube.The total number of…

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: What do granite and basalt have in common?

A: Granite and Basalt are two of the major rocks found in the earth crust.

Q: Which of the following substances should have the highest melting point?     CO2     Xe     F2…

A: The melting point of the substance depends upon the intermolecular forces present in the molecule.…

Q: Which of the following compounds is expected to have the highest melting point? MgO BaS CaCl2…

A: The lattice energy or lattice enthalpy of a solid substance is the amount of energy required to…

Q: Describe what happens on the molecular level when silica is heated and then cooled to make glass.

A: The general formula of silica is SiO2 which melts on heating above 1500oC.

Q: A (made-up) metal has a face-centered cubic crystal structure. Its density is 20.5 g/cm 3. Its molar…

A: Given: Density of metal = 20.5 g/cm3. The lattice structure of the metal is FCC. And the molar mass…

Q: The ionic compound, CsI, forms a body centered cubic structure (see below) where the anions occupy…

A:

Q: Silica is utilized in part to make the CPU chip in a computer.

A:

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: Now use the bonds and/or interactions you indicated in Q4.6 to explain how these types of…

A: Correct answer -->  C (s, Diamond) Melting point of the molecules -->  CH4   --> - 182°C…

Q: Silica is utilized in the manufacture of the central processing unit (CPU) chip used in computers.

A: Silicon is used because it can be used as either an insulator (doesn't allow electricity to flow) or…

Q: Which alloy is a combination of metal and non-metal? Steel O Bronze O Solder O Brass

A: Alloy having combination of metal and non metal ?

Q: if you can. If there is not enough element 1 2 3 description Element 1 is a hard dark-red solid. A…

A: Given that :We have to identify whether the elements are metal or non-metal from the given…

Q: An element with atomic mass 106.3amu crystallizes in a face–centered cubic unit cell.  Its density…

A: Atomic mass = 106.3 amu Density = 12.9 g/mL Temperature = 300 K Density is given by the below…

Q: What is the crystalline structure of Chromium? HCP Cubic BCC FCC

A: Crystalline structure of Chromium:

Q: What names are given to SiO2 when it exists in the following two solid-state forms? Amorphous Solid…

A: The correct answer about SiO2 is given below

Q: Which substance would you expect to have the LOWEST melting point? CH3F CH3OH Ni LiCl

A: The objective of the question is to determine which among the given substances - CH3F, CH3OH, Ni,…

Q: Which substance forms a metallic lattice? K C (graphite) I2 MgS

A:

Q: What are the various phases of SiO2?

A: The objective of the question is to write the various phases of SiO2.

Q: An unidentified elemental solid has a density of 5.36 g/cm°. As a solid this element adopts a cubic…

A:

Q: Decide what kind of crystalline solid each element or compound in the table forms, and what kind of…

A: There are mainly 4 types of crystalline solids:  Ionic Metallic Covalent Molecular

Q: adwa Some hypothetical metal has a simple cubic crystal structure. If its atomic weight is 61.25…

A: r = 0.174nm For simple cubic crystal , a= 2r      Therefore a = 2×0.174                    = 0.348nm…

Q: Glass, quartz, and cristobalite have the same chemical formula, SiO2. Given the XRD diffractograms…

A: XRD diffraction is X-Ray diffraction used for studying the crystalline structure of the materials.…

Q: The density of platinum is 21.45 g/cm3. It crystallizes in a fcc lattice. Calculate its metallic…

A: The metallic radius is determined by the cube length. The cube length can be calculated as follow:…

Q: Part A Which is the correct balanced chemical equation for the reaction of solid lithium with liquid…

A:

Group 14 Elements

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