Which statement regarding VB theory is INCORRECT? a) A double bond is a sigma bond and a pi bond. Ob) Hybrid orbitals use atomic orbitals from the outermost shell. c) Sigma bonds are formed by the end-to-end overlap of orbital lobes. d) dorbitals are not included in hybrid orbitals. e) Pi bonds are overlaps of parallel p orbitals. A compound of iron and sulfur crystallizes in a lattice pattern described as cubic closest packed sulfide ions, with iron ions in all octahedral sites. What is its empirical formula? a) Fes Ob) FeS2 c) Fe2s d) Fe354 e) Fe253

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A: Plane of symmetry is represented by sigma symbol which is given in question.

Q: freq, Hz Jab Jac Jad 23 4'5 6 7

A:

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A: below answer is given chemical shift values are written from spectra

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A:

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A: Step 1: Step 2: Here since pi bond has electron density, it attacks on H Step 3: Step 4:

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A: Step 1: Step 2: Step 3: Step 4:

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A: Nuclear magnetic resonance spectrum is obtained when a nucleus absorbs radio frequency and cause…

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A: Given,  Mass percentage of C = 21.7% Mass percentage of O = 9.6% Mass percentage of F = 68.7%…

Q: How would I convert this answer to nm?

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A: Which quantum number is allowed ?

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A: An isosbestic point is a specific wavelength, wavenumber or frequency at which the total absorbance…

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A: The solution is as follows:

Q: What is the bond angle of the indicated atom? H H HC-C-H H. H. a. 120 degrees

A: From hybridisation of Carbon , we can determine bond angle.

Crystal Lattices and Unit Cell

Consider a crystal. The regular and repeating pattern of constituent particles is the most distinguishing feature of crystalline solids. A crystal lattice is formed when these particles are replaced with representative points. The three-dimensional arrangement of constituent particles is known as a crystal lattice. Unit cell is that the smallest portion of a space lattice which when repeated in several directions, generate the whole lattice. Unit cell is a building block of a lattice. It is the smallest unit of cell.