1. The chart below shows three allotropes of carbon. ALLU1HOMIC UHMS O CAKSUN These three forms have 1) the same formula, crystal structure, and properties 2different formulas and crystal structure but same properties 3) different formulas, crystal structure, and properties 4) the same formula, but different crystal structure and properties diamond fallerene graphite

Q: apart making it less stable. 18. Which of the following would be expected to have the lowest vapor…

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Q: Using principles of chemical bonding and/or intermolecular forces, explain each of the following.…

A: Elements react with each other to form chemical bonds. Chemical bonds are formed to increase the…

Q: CH. :N=N: Dipoles can form Naci Electrons are shared H H:C:H Double and triple bonds can form Formed…

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Q: Molybdenum has a BCC crystal structure, an atomic radius of 0.1363 nm, and an atomic weight of 95.94…

A: For BCC structure, number of atoms per unit cell = 2 Radius = 0.1363 nm Edge, a∘…

Q: A hypothetical element, Le, has a body centered cubic structure with a density of 6.57 g/cm.…

A: Given: Density of element = 6.57 g/cm3 Atomic mass of Le = 55.334 g/mol. And the lattice is BCC.

Q: Determine the solid with the highest melting point. O CHF,(s) O CF,(s) O H,O(s) O KCI(s)

A: Compound with the strongest inter-molecular interaction in solid state will have highest melting…

Q: Do the anions touch each other in any of these three structures? If not,which ions do touch each…

A: To find: the anions touch each other in any of the three structures . if not which ions do touch…

Q: In which of these substances is hydrogen bonding likely to play an important role in determining…

A: Since H bonds are formed only with very high electronegativity elements. Usually it forms only with…

Q: MCQ 72: Metals are good conductors due to A. ionic lattices B. crystalline lumps C. mostly solids D.…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: Which element remain liquid at a solid room temperature

A: Given  Condition = Room temperature  Liquid element in this temperature = ?

Q: Do the anions touch each other in any of these three structures? If not,which ions do touch each…

A: Anions do not touch each other in any of these three structures.

Q: Which of the following substances has the highest bolling point? Link to Physical Constants Link to…

A: Applying concept of vonder waal's interaction.

Q: Iodine is a solid at room temperature (mp = 113.5 °C) while bromine is a liquid (mp = -7 °C).…

A: Introduction: The group 17 belongs to halogen group having general outer electronic configuration…

Q: Which arrangement of cations (yellow) and anions (blue)in a lattice is the more stable? Explain your…

A: Anions have negative charge and hence repel each other, so the most favorable arrangement of ions in…

Q: 28) Classify each substance in the table as either a metallic, ionic, molecular, or covalent network…

A: Ionic compounds are brittle, white color and soluble in water and it can electricity in molten…

Q: 2 The Crystal Structure is BCC

A: The body-centered cubic (BCC) unit cell has atoms at each of the eight corners of a cube plus one…

Q: What is the purpose of crystal structure?

A: Crystal structure is determined by X-ray crystallography.

Q: Q: Describe a network solid and give two examples. A: Network solids are substances in which all of…

A: About types of solids: solids are of two types crystalline solids and Amorphous solids

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: Calculate the energy for vacancy formation (in J/mol) assuming that the density of the metal remains…

A: Matter exists in solid state also. Metals are in solid state. Temperature is the measure of hotness…

Q: Briefly explain why chemically similar alkali metal chlorides, NaCl and CsCl, have different…

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Q: Which of the following represent closest packing of spheres? 11 III IV O II + IV OI + IV III+IV | +…

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Q: One of these substances is a liquid at room temperature. Which one?a) CH3OH b) CF4 c) SiH4 d) CO2

A: Room temperature is the temperature of the atmosphere or the temperature of the lab in which we will…

Q: Explain the trend in ion-ion forces as it relates to the product of charges. Give one example of…

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Q: Atom within crystal structure are held together by a. secondary bond b. hydrogen bond c. covalent…

A: Crystal structure is highly ordered arrangement of atoms/ions.

Q: Explain the fol i) ii) Magnesium has a higher melting Silicon has a very high melting temperature…

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Q: Ionic compounds tend to have higher melting and boilingpoints and to be less volatile (that is, have…

A: A chemical compound consists of two or more different elements which are bonded with each other…

Q: Transition metals in their ores are colored a. True b. False   Which of the following substances…

A: We will answer the following questions with explanation.

Q: Use sketch diagrams to show the 110 and 211̅ lattice plane for a tetragonal crystal.

A: in this systempresence of  three mutually perpendicular axes, two  are equal in length.   TETRAGONAL…

Q: 3. The number of Bravais lattices are. (a) 7. (b) 14 (c) 10

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Q: (c) Li boils more than 1100°C higher than it melts.9.72 Magnesium metal is easily deformed by an…

A: The process of the conversion of liquid to gas is called boiling. A substance has its vapor pressure…

Q: Indicate the strongest force holding the crystals together in CH3OH and K2S.

A: The force of attraction present between the molecules of a substance is known as intermolecular…

Q: 246.05°C, while the boiling point of liquid argon (Ar) is 17. The boiling point of neon (Ne) is -…

A: All matter can be classified as solid, liquid and gases mainly. In these physical states of matter,…

Q: Which of the following is an ionic solid? s2- SF6 Na2s O S8 O so,2-

A: We know that, Generally an ionic compound are solid. S2- is only one ion. So it is not solid. SF6 is…

Q: 88.why does evaporation of water from a surface cause cooling of the surface? evaporation causes…

A: The solution is given below -

Q: Draw the Crystal Lattice Structure and Formula Unit for Potassium Nitrate.

A: Potassium Nitrate Chemical Formula: KNO3

Q: The melting point of copper metal is 1083 °C. The vapor pressure of solid copper is reported to be…

A: At given temperature (1060°C + 273 = 1333 K) and pressure (3.33 × 10-7 atm), the number of copper…

Q: How much heat energy is required to convert 74.9 g of solid iron at 27⁢ ∘C to liquid iron at 1538⁢…

A: In given question iron firstly convert heated solid form than liquid form . So total heat…

Q: Which substance in each of the following pairs would you expect to have the higher boiling point?…

A: In this question, we have to find out the correct answer of given problem by the help of THE…

Q: Question is attached

A: The iodine molecules have two types of interactions. One is intermolecular and the other is…

Q: describe to them using your knowledege of intermolecular bonding, why methane is a gas at SATPand…

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Q: It is a type of bond between a hydrogen atom and a pair of unshared electrons on the electronegative…

A: A metallic bond is a type of bond formed due to the attraction between a metal cation and free…

Q: Since the vapor pressure of diethylether at 18 ° C is 401 mmHg, calculate the pressure at 32 ° C…

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Q: Q1/ There are three alloys ( A,B ,C) have atomic wieght, desity, and atomic radus as listed in…

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Q: 24. Krypton has a higher melting point than argon because of its A) hydrogen bonding. B) stronger…

A: When two atoms of the same element come together then opposite dipoles create due to the moving…

Q: Why are the close pack directions important feature in crystal structure? (one sentence only)

A: To give the importance of close pack directions in crystal structure?

Q: 2. How to find what a materials crystal structure is? (FCC, BCC or neither FCC or BCC or

A: We have to tell how to detect a material crystal structure is either FCC, BC, or neither FCC, or…

Q: What type of packing is shown below? O body centerd cubic O cubic closed pack simple cubic O…

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