6. The density of sodium chloride is 2.165 g/cm³. Using only the density and crystal structure, calculate the distance between Na and Cl atoms in the structure.

Q: Are metalloids electrical semiconductors? Explain with an example?

A: Are metalloids electrical semiconductors have to be explain with an example,

Q: From the data in following table, compute the theoretical density of CaF2, which has the fluorite…

A: Given: Ionic radius of Ca2+ = 0.100 nm Ionic radius of F- = 0.133 nm To calculate: Theoretical…

Q: 3.00- g sample of an alloy of Pb Lead was dissolved in nitric acid (HNO3). Sulfuric acid was added…

A: First Calculate mole by dividing Molar mass to the mass  Then use mole -mole relationship to get…

Q: 4. What is the definition of thermal chemistry? The study of change that involves temperature The…

A: Thermal chemistry is associated with quantity of heat involve in a chemical reaction.

Q: Write a feature which will distinguish a metallic solid from an ionic solid.

A: Introduction : We have to tell one feature how metallic solid is different from ionic solids .

Q: Metals can be rolled into sheets and stamped into various forms. In contrast, diamond is very hard…

A: Metals posses the property of being cast into sheets and other forms while as diamonds do not…

Q: What is the chemical formula for the compound formed between vanadium(III) and fluorine? chemical…

A: The chemical formula of the compound formed between Vanadium (III), fluorine and Vanadium (III) and…

Q: Two reasons why a crystal model accurately represents sodium chloride

A: Ionic compounds take on the form of extended three-dimensional arrays of cations and anions. The…

Q: Some salts make hydrates when there is moisture around. Some hydrate samples can absorb lights in…

A: Number of Mole-Ratio of given mass of substance to the molar mass of substance is called number of…

Q: You are told by your instructor to go to the stock room and find a bottle of the chemical K3Cl. Does…

A: K is potassium, element of group 1 of periodic table with 1 valence electron And Cl is chlorine,…

Q: Using the following thermodynamic data, calculate the lattice enthalpy of lithium oxide: Li(g) →…

A: It is based on the concept of lattice energy  Here we are required to find the lattice energy of…

Q: 1. How can you explain why ethanol is flammable while water is not or why table sugar turns black in…

A: 1. Sugar contains sucrose and glucose molecules when we heat them below there ignition point, many…

Q: Write a balanced equation for the reaction of iron(III) oxide(s) and aluminum(s) to give aluminum…

A: A reaction is said to be balanced if all the atoms or elements present in the atoms in reactant is…

Q: Molybdenum has a BCC crystal structure, an atomic radius of 0.1465 nm and atomic weight  of 95.94…

A:

Q: A piece of an imaginary element (called Imaginium), with dimensions 1.2 mm x 1.2 mm x 1.2 mm, has…

A: Volume of piece = 0.12 × 0.12 × 0.12 cm3 = 0.001728 cm3 Volume of the imaginary element which…

Q: 4. The common oxidation number for an alkaline earth metal is +2. (a) Using the Born-Mayer equation…

A: Here, first we have to draw the Born-Haber cycle and then we have to show that CaCl is an exothermic…

Q: A substance has a low melting point (i.e. below room temperature). It does not conduct electricity…

A: Metals (due to free electrons) and ionic compounds (in aqueous medium produce ions) conduct…

Q: 7. Melting points of Br2 and ICl are - 7.2 and 27.2°C, respectively and their electrons are same.…

A: Both Br2 and ICl  are isoelectronic, but their melting points are different.

Q: Which statement explains why metals conduct electricity when solid? A They have atoms which are free…

A: A metal is a substance which shows lusture and are sonorous  They have many physical properties…

Q: Write the balanced chemical equation for the reaction of solid lithium with liquid water?

A: Lithium reacts intensely with water, forming lithium hydroxide and highly flammable hydrogen. The…

Q: 21. Based on your understanding of the relationships between the structures and physical properties…

A: Metals have high melting point. Generally metals are hard except Li, Na and K. Metals are soluble in…

Q: A 67.2 g sample of gold and palladium allo contains 3.40x10^23 atoms. What is the mass percentage of…

A: Given : Mass of sample = 67.2 gAnd total number of atoms = 3.44 X 1023 atomsAssuming the moles of…

Q: Assume that you are given samples of two white crystalline compounds, one of them ionic and the…

A: Given information,       Two white crystalline compounds, one of them ionic and the other one…

Q: 4. Which of these two metals will have a higher melting point? Explain your choice. Na and Al

A: Al has higher melting point than Na.  Metallic lattice of sodium is weak than Aluminium.

Q: Cr(s) + O2(g)→ Cr,O3(s)

A: According to the Law of conservation of mass " all atoms of different elements must be equal on both…

Q: Since Na and Cs are both Group 1 metals we might expect the crystal structure of CsCl to be…

A: The cubic system is a crystallographic system characterized by a cube-like arrangement of atoms,…

Q: 6. A hypothetical metal has the BCC crystal structure, a density of 7.24 g/cm, and an atomic weight…

A:

Q: What is the chemical formula for the compound formed between manganese(IV) and bromine? What is the…

A: (1) Mn4+ and Br-  MnBr4 = Manganese(IV) Bromide   (2) Mn4+ and Se2-  MnSe2 = Manganese(IV) Selenide

Q: What is the chemical formula for the compound formed between manganese(IV) and chlorine?

A: Manganese (Mn) is a transition element and Mn is present in +4 oxidation state . Cl (atomic number =…