Which of the following elements reacts with sulfur to form a solid in which the sulfur atoms form a closestpacked array with all of the octahedral holes occupied: Li, Na, Be, Ca, or Al?

Q: Knowing the enthalpy of formation of calcium fluoride is -1228 kj/mole, the enthalpy os…

A: Given; Reaction : Ca (s)  + F2 (g)  →CaF2 (s)  ∆Hf∘ = -1228 kJ/mol ∆Hsublimation=168 kJ/mol…

Q: What is the type of interactions holding Sr atoms together in the crystal?

A: Strontium (Sr) with atomic number 38 is a metal and it exists in crystal form.

Q: Calculate the number density of valence electrons in a certain metallic element given that the…

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Q: How does the electron structure of an isolated atom differ from that of a solid material? Select the…

A: The electron structure of an isolated atom differ from that of solid state in the following ways: In…

Q: 5. Strontium (Sr: [Kr]5s2) crystal has a mass density of 2.64 g/cm3 and a molar mass of 87.62 g/mol.…

A: Mass density = 2.64 g cm-3 Molar mass   = 87.62 g mol-1

Q: Differentiate the metals and nonmetals based on their: Intramolecular Bond, Intermolecular Bond, and…

A: Metals have loosely bonded valence electrons and can easily donate elctrons to other atoms .They…

Q: Determine the theoretical density for Ti element, which is HCP structure, atomic mass 47.867 g/mol,…

A: For HCP structure of titanium, Ti, the relationship between radius and edge length is - a = 2R Here,…

Q: The diameter of a rubidium atom is 4.95 A° . We will considertwo different ways of placing the atoms…

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Q: Mixing SbCl3 and GaCl3 in a 1;1 molar ratio (usingliquid sulfur dioxide as a solvent) gives a solid…

A: (a)

Q: a. What is the equivalent energy (in Joules) of the power required by Porous at the given time? b.…

A: a. We have 1021ZW= 1W ,so 6917.82 ZW = 6.917× 10-18W. Also we have Power ,P= Energy(E)/time (t), So…

Q: By using photons of specific wavelengths, chemists can dissociate gaseous HI to produce H atoms with…

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Q: Suggest, giving brief reason(s), which substance in each of the following pairs is likely to have…

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Q: y Choose the atom or ion in each pair which best fulfills the given criterion: (i) Greater atomic…

A: As per the bartleby expert guidelines, I am allowed to answer first threw questions at a time.…

Q: The diameter of a rubidium atom is 4.95 A° . We will considertwo different ways of placing the atoms…

A: (a) Given diameter = 4.95A0                         = 4.95 × 10-8 cm

Q: What happens to h, the height of the mercury column, if theatmospheric pressure increases?

A: Barometer is an instrument used to measure the atmospheric pressure. Barometer usually consists of a…

Q: Hg^2+orbital filling diagram

A: Orbital filling diagram is mainly used to observe quantum numbers available in electronic…

Q: The student finds the following particulate model of AgCl(s). Assuming the crystal structures are…

A: The electronic configurations of cations for Ag+ and Cu+ are shown below. Ag+:Kr4d10Cu+:Ar3d10

Q: JB a KiH On the basis of ionic charge and ionic radii given below, predict crystal structures for…

A: The radius ratio rule will predict the crystal structure of all ionic compounds. The radius ratio is…

Q: Ammonium chloride, NH4Cl, is a very soluble salt in water.Is there an N—Cl bond in solid ammonium…

A: Given, Ammonium chloride, NH4Cl, is a very soluble salt in water

Q: What is the value of principlal quantum number n of orbital 4p? O A. 2 В. З OC.1 D. 4

A: The electron shell is designated by the principle quantum number n. Since n denotes the most likely…

Q: Which of the following atoms should have the greatest polarizability? F Br Po Pb He

A: Polarisability : It is the property by the virtue which element tend to acquire electric dipole when…

Q: which etement would have कह षननना ०कमीद्वपहळंदे of LAr] 3 d2for itd 34 ion ņ Enter the element…

A:

Q: Which of the following is NOT possible?       3f   4d   5p   2p   2s

A: According to quantum mechanics, there are four types of quantum numbers. The electrons are filled in…

Q: In a hydrogen molecule, the two hydrogen atoms are held together by a single bond with a bond energy…

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Q: 4. N204 5. CO

A: Empirical formula contains elements in the simplest whole number ratio.

Q: To explain why AHan for RbCl is different than that for KCI, the student investigates factors that…

A: The ionic size increases from top to bottom in a group and decreases from left to right in a period.…

Q: The ionic compound CaO crystallizes with the same structureas sodium chloride (Figure 8.3). (a) In…

A: a. The crystalline structure of sodium chloride (refer Figure 8.3 in the book) has six Cl ions in…

Q: lattice Gi/ Calculate .of the ionic the Onersy crystals, Which have the Nacl structure, When X = l75…

A: Given , α=1.75n=9 Lattice energy equation…

Q: Which has the smallest radius of the following? O Mn O Mn 2+ Mn 3+ jes.

A: As the positive charge increase on element radius decreases due to increase in  nuclear charge. So,…

Q: 16. Calculate the normal melting point of l2 (s) in °C given the following data: AH° = 15.52 kJ/mol…

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Q: Why carbon does have a larger tendency of catenation than silicon although they have same number of…

A: To explain why carbon has a higher tendency of catenation than silicon even after both have the same…

Q: If galena (Pbs) was defined by metallic bonds ,calculate the radius ratio between the two elements…

A: Introduction: The radius ratio is the ratio of the cation (smaller ion) and that of the anion…

Q: Thermodynamics and enthalpy Data: M(Pb) = 207 g mol AmeltH°(Pb) = 4.8 kJ-mol AvapH°(Pb) = 179.5…

A: Molar enthalpy of reaction can be calculated from the steps involved in the reaction.

Q: Take into account the following: Both Land G and Elements Land are found in Group 17. (Halogen…

A: Halogens are the most electronegative elements in the periodic table   .

Q: Discuss the dependence of strength on temperature for metals, ceramics and polymers from the…

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

Q: Why does the SCOT process need to be integrated with the CLAUS Process?

A: Answer - SCOT Process - The SCOT process catalytically converts the remaining sulphur dioxide in…

Q: Below are 298K thermochemical data for gallium metal in the solid and liquid phases. Determine the…

A: From thermodynamics we can Write ΔG =  ΔH - TΔS At phase change of melting point  ΔG = 0 so, Tmp =…

Q: Explain with examples, how bonds are formed in ionic compounds and covalent compounds.

A: Given : ionic and covalent compound.  To find : How ionic and covalent bond forms.  Solution : As we…

Q: 6. 7. 8. 9. 10. A substance is a brittle crystal that conducts electricity in molten liquid state…

A: “Since you have asked multiple question, we will solve the first question for you. If youwant any…

Q: A 330 KJ/mol is the sublimation energy of aluminum, and its atomic radius is 118 pm. Discuss…

A: Do decahedron has only 12 faces but they are Pentagons.  Icosahedron has only 20 triangular Faces.…

Q: The best explanation for the fact that diamond is extremely hard is that diamond crystals A. are…

A: Diamond is actually allotrope form of elemental C. In its structure each C is bonded to 4 other C…

Q: The cyclosilicate ion consists of three silicate tetrahedralinked together in a ring. The ion…

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Q: Your roommate is having trouble understanding why solids form. He asks, “Why would atoms bond into…

A: Solid are the basic state of matter and having low intermolecular spaces and high intermolecular…