Which of the following statements isfalse? *2nd and 3rd row d metals are generallylarger in size than 1st row d metals.The most stable electronic configuration ofCr (Z = 24) is [Ar]4s?3d*.Between 2nd and 3rd row d metals there islittle difference in size.Within the same "n", the s block metals arelarger than the d block metals.Considering a homonuclear diatomicmolecule, Tt-symmetry indicates thatwhen the molecule is rotated aroundthe internuclear axis, the orbitalsundergo a change in phase.O TrueFalse

Half filled and fully filled configuration are more stable than normal.

Answered: Which of the following statements is…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Consider the octahedral complex [FeBr6] 4−. In water solution it has an absorption peak at 864 nm with a molar absorptivity (ε) of 3.6 L mol-1 cm-1 . (a) What is the energy (in wavenumbers, cm-1 ) of the absorption peak? Show all work. (b) How many valence d electrons does the metal center have? Justify your answer. (c) How many unpaired electrons per molecule would a magnetic susceptibility experiment predict? What would the S number be for this transition metal center? Justify your answers. (d) What electronic transition results from absorption of 864-nm light? (e) Calculate the ligand stabilization energy (in units of ∆o) and units of coulombic (Πc) energy. (f) How would the ligand field strengths (∆o) of [Fe(NH3)6] 2+ and [Fe(bipy)3] 2+ differ from that of [FeBr6] 4−? Why?
Which of the following pairs are coordination isomers? a. [Pt Br2Cl2(H20)2]CO3 and [PtBr2Cl2]CO3 2H20 b. [Cr(H,0)a][PtCla] and [PtCl,(H,0)2][C•CI,(H,0)2] C. None of the choices |d. [PtCl4(H2O)2]Cl2 and [PtCl3(H20)2]Cl3
1- Write down the physical preperhes of metals. 2. Find Ms (magnehi moment f spin mohunonly) For Cr+ Cu+ 3. which of the following molecules is paramagnei (N2 ,0 ,F2 NO, CO, NO, N0) 4 - Name cach of the following elements Mu Fr Se 5- write the symbel of Hhe following clements Rhenium Rhodium Ruthenium Radun Ru hidium
Consider the octahedral complex [FeBr6] 4−. In water solution it has an absorption peak at 864 nm with a molar absorptivity (ε) of 3.6 L mol-1 cm-1 . (a) What is the energy (in wavenumbers, cm-1 ) of the absorption peak? Show all work
Estimate the wavelength of maximum absorption for the octahedral ion hexa-aquanickel(II) from the fact that its solutions are colored green by transmitted light. Estimate the crystal field splitting energy A, (in kJ mol¯1).
5. A molecule of Co(CN)3(CI)3 exists as both a fac- and mer- isomer which both exhibit unique properties such as color and melting point. а. Draw the lewis structures for both the mer- and fac-isomers of Co(CN)3(CI)3 and label. Additionally identify and label if each structure is either achiral or chiral. b. Identify the point group of each isomer Fac= Mer= c. Identify ALL of the symmetry elements present in each isomer. (if there are multiple occurrences of a single symmetry element, identify how many of each type are present.) Fac= Mer=
Direct bandgap semiconductor materials generally support radiative (optoelectronic) transitions better compared to indirect bandgap semiconductor materials. Why?
The mineral CuFe2O4 exhibits a spinel structure. Use crystal field stabilization arguments to predict whether this would be a "normal" or "inverse" spinel arrangement. For the purposes of the answer, assume At = 0.5 Ao and that all metal ions are high spin.
Elimination of an L ligand (as the first step of a D substitution mechanism) from a charge - neutral NiL4 complex has very little tendency to occur for L = P(OMe3), but for L = PMe3, it occurs almost completely. Since the two ligand species have approximately the same cone angle, what factors are responsible for this difference?
For the following structure derived from a tetrahedral Ni(CO)4, please determinethe number of infrared and Raman bands for their CO groups. (Please note: Modes withtranslational symmetry (x, y, z) will be infrared active while modes with xy, xz, yz, x2, y2 or z2symmetry are Raman active.)
= MnAs has the hexagonal NiAs-type structure, a = 3.72 A and C 5.71 Å. can you calculate both (a) Mn - As distance, and (b) two Mn - Mn distances, and (c) As - As distance, and (d) coordination environments of Mn and As
3. (c)) Fe(CN),]³- exhibits two sets of charge transfer absorptions in visible and ultraviolet region but [Fe(CN),]*¯ shows 11 only one absorption in the ultraviolet region. Explain.

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