10. (a) What do you mean by combination band and Fermi resonance?

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

A:

Q: Gaseous tetraphosphorus is prepared industrially from the electrothermal reaction of calcium…

A: The preparation of many  phosphorus compounds begins with P4O10. The acids and phosphates are useful…

Q: 1. In an experiment, what volume of O2 (g) at 0°C and 760 mmHg is produced when ) A of current is…

A: This question is related to electrolysis

Q: Would the reaction of magnesium, mg with oxygen be more or less vigorous than Al?

A: Yes the reaction of Magnesium with oxygen will be more vigorously than Reaction of Alminium with…

Q: to

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

Q: Why is there objection in the use of Hydrogen Sulfide in group cations?

A:

Q: 2. Calculate the solvation free energy AG of Mg" using the Born theory. Given that the ionic radius…

A: When a cation is dissolved in a particular solvent (mostly polar solvent), the cation gets…

Q: Use a Lewis dot structure to predict the structure of PO43-  Include an analysis of bonding, i.e.…

A: The correct Lewis structure of PO43-

Q: what is the difference between ferromagnetic and paramagnetic?

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

Q: Why first ionisation enthalpy of Cr is lower than that of Zn ?

A: Why first ionisation enthalpy of Cr is lower than that of Zn is to be explained.

Q: Draw the structural formula of bis(dimethylglyoximato)nickel(II) and describe the type of…

A:

Q: Explain electrochemical potential of the species with the aid of the equatio

A: Electrochemical potential or Ecell is the potential difference of the two half cells of an…

Q: Calculate the energy needed to dissociate 1.00 mol of crystalline RbCl into its gaseous ions if the…

A:

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

A: (a)

Q: Explain the structures and preparation of (SCN)2 , (SeCN)2 , (SCSN3)2 and (OCN)2.

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Q: Calculate the lattice energy of AgBr(s) using the following thermodynamic data (all data is in…

A: The Born–Haber cycle is purposed the calculation of reaction energies with the help of ionization…

Q: Discuss the following structure of AB2 and ABO3 type oxides in detail with proper diagrams and…

A:

Q: Calculate the enthalpy of synthesizing hydrogen iodide to from hydrogen and iodine. 12(s) + H2(g) →…

A: Enthalpy of reaction is  calculated as difference in enthalpy  of products and enthalpy of…

Q: In terms of bond energies and thermodynamics, why do we (as a society) make so much CO2?

A: Carbon dioxide (CO2) is a greenhouse gas.  It is mostly released through human activities. It is…

Q: What methods could be used to determine the structure of polyiodides? Discuss how could they…

A: Answer -  polyiodides - The polyiodides are a class of polyhalogen anions composed entirely of…

Q: Which groups of elements have the best and which the poorest electrical conductivities? Explain.

A: For an element to conduct electricity, it must have free electron to move around.

Q: Why catenation property is most remarkable in the case of carbon?

A: Catenation:The property of linkage of atoms of same element forming a longer chain is known as…

Q: Illustrate the  Relationship among Boiling Points, Dipole Moments,and Polarizability of Some Binary…

A: To illustrate the relationship between the boiling points, dipole moments, and polarizability of…

Q: How do we know that IBr is polar and CO2 is non polar?

A: Polarity of any compound is determined by the electronegativity value, dipole moment or geometry of…

Q: (a) What is a kinetic isotope effect? (b) Do compounds ofhydrogen exhibit a relatively large or…

A: a) Kinetic isotope effect can be defined as follows – "any reaction that includes breaking a bond to…

Q: A brief description of the range of silicate ions that can be form given in giligot ure

A: This is a multiple questions .According to Guidelines, in multiple questions, we can solve only the…

Q: (a) Use the Born–Haber cycle, with data from Appendices D and F, to calculate the lattice energy of…

A:

Q: For the elements of groups 13 to 17 of the second period, how can they complete their valence layer?…

A: The electrons in the outermost principal energy level of an atom that can participate in formation…

Q: value of Ksp be for calcium fluoride?

A:

Q: Suppose that nA = 0.22nB and a small change in composition results in μA changing by δμA = −15 J…

A: At constant P, T: ∑ni dμi=0 Thus it implies that: nA dμA+nB dμB=0                 ...... (1)

Q: what are the bondling and structure of graphite, explain why graphite is a good solid lubricant

A: Graphite has a covalent structure consisting of layers of carbon atoms. Carbon atoms have 4 valence…

Q: Calculate the lattice enthalpy (DeltaH in kJ/mol) of the MF2 metal fluoride using the following…

A:

Q: 0.84 g of a metallic element reacts completely with 5000 cm3 of oxygen at 441 K and 22 kPa pressure…

A:

Q: 5. Explain why lattice enthalpy calculations based on the Bom-Mayer equation reproduce the…

A: Born-Mayer equation is used to calculate the lattice energy of a crystalline ionic compound.…

Q: what are semi-conductors ? give examples.

A: Semiconductors are poorer electric conductors than metals but better conductors than non metals. Ex.…

Q: If Li(s) is exposed to F2(g), how would the electrons rearrange? Write a balanced chemical equation…

A: When Li and F2 are exposed to each other LiF is formed. The reaction for the compound formation is…

Q: hy do oxides of phosphorus and sulfur have varied oxidation number?

A: The oxidation state of an element is the representation of the charge acquired by that element after…

Q: Of the following, AH°† is not zero for Si (s) Sc (g) O P4 (s, white) Ca (s) O Br2 (1)

A:

Q: The U.S. Department of Energy has set the benchmark of 6% H by weight for an acceptable hydrogen…

A: given materials : NaAlH4, LiAlH4, LaNi5H6,  TiFeH2

Q: Sketch a qualitative enthalpy diagram for the process of dis-solving NaI(s) in H₂O (exothermic).

A: The enthalpy diagram is given below -