Hassium -Discuss why your transition metal (Hassium) and their compounds display a variety of color. Be...
Hassium -Discuss why your transition metal (Hassium) and their compounds display a variety of color. Be sure to include in your discussion, important oxidation states, the electron configuration and how the d-electrons are involved. -How can you include the electromagnetic spectrum and the nature of light into your discussion? How is energy and wavelength related? Use your knowledge of the emission and absorption of light in your discussion
Homework Answers
Whenever light is passed through a sample the transmitted light is deprived of the wavelength absorbed. The wavelength complimentary to absorbed wavelength is emitted.
If the absorption takes place in visible region then corresponding electronic spectra results in colour. The absorption in visible region take place when energy difference is less.
In transition metal ion in presence of ligand field the degeneracy of five d-orbital is lost and they split in two parts. When light falls on transition metal ion absorption occur in visible region and d-d transition occurs which results in colour
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Hassium -Discuss why your transition metal (Hassium) and their
compounds display a variety of color. Be...
1. What distinguish a transition metal from a main group metal? 2. Why is zinc not...
1. What distinguish a transition metal from a main group metal? 2. Why is zinc not considered a transition metal? 3. Write the electronic configuration of the following ions; V". Cr, Mn, Fe, Ni, Ti" 4. What are basic assumptions of Crystal Field Theory? 5. Compounds containing the Scion are colorless whereas those containing Ti* ion are colored. Explain. 6. Predict the number of unpaired electrons in [Cr(en) ions. 7. What are spectrochemical series? 8. The compound hexaminecobalt(III) chloride is...
The electronic absorption spectrum UI (Cr(NH3)6]3+ (aq) is shown in Figure 11.5. One of the...
The electronic absorption spectrum UI (Cr(NH3)6]3+ (aq) is shown in Figure 11.5. One of the observed peaks is centered at about 303 nm. 1.a. What is the approximate value of the wavelength for the two other peaks? Which one of these three peaks falls in the visible region of the electromagnetic spectrum? The wavelength at this peak is (Amax), and this transition accounts for the color of the complex ion in solution. The energy of the transition occurring at...
Explain, in as much detail as possible, how these two figures are related. Some terms to...
Explain, in as much detail as possible, how these two figures
are related. Some terms to include in your explanation are
emission, absorption, photon, spectrum, wavelength, light,
electron.
Show all of your work in arriving at your final answer.
ammun Four excited states Energy hom n Ground state 410 nm 434 nm 486 mm 656 nm
Name Lab Day circled: Mon. Tues. AM Tues, PM Wed Thurs. Fri. Prelaboratory Exercise for the...
Name Lab Day circled: Mon. Tues. AM Tues, PM Wed Thurs. Fri. Prelaboratory Exercise for the Atomic Emission and Absorption Experiment The spectroscopes used in our lab are scaled in nanometer units. You will work with three of the four possible Balmer series transitions of Hydrogen whose lines are in the visible region of the electromagnetie spectrum. Electrons absorb energy from n-2 level and depending on how much energy is absorbed, they are excited to different higher energy levels. From...
1. Titanium metal requires a photon with a minimum energy of 6.94 x 10- J to...
1. Titanium metal requires a photon with a minimum energy of 6.94 x 10- J to emit electrons. a. What is the minimum frequency of light necessary to emit electrons from titanium via the photoelectric effect? b. What is the wavelength of this light? c Is it possible to eject electrons from titanium metal using visible light? 2. Calculate the energies of an electron in the hydrogen atom when n=2 and when n=6. Calculate the wavelength of the radiation released...
PRE-LABORATORY QUESTIONS (For full credit show your calculations) 1. List the expected color of light and the...
PRE-LABORATORY QUESTIONS (For full credit show your calculations) 1. List the expected color of light and the corresponding wavelength (nm) associated with each cation (use Table 1) Rubidium, Rb Cesium, Cs 2. Calculate the energy associated with the light emitted by each of the elements above (sue equations 1 and 2) Rubidium, Rb Cesium, Cs 11:17 $3.us-east-1.amazonaws.com Flame Tests&Elecrn Ceniguaion 1 of 7 FLAME TESTS & ELECTRON CONFIGURATION INTRODUCTION AND BACKGROUND The chemistry of an element strongly depends on the...
POST-LABORATORY QUESTIONS (For full credit show your calculations). us T able enced color of ligh...
the
date is 4/09/19
POST-LABORATORY QUESTIONS (For full credit show your calculations). us T able enced color of light and the coresponding wavelength (om) associated with each cation Barium, Ba2 Copper, Cu2 Sodium, Na Calcium, Ca2 Potassium, K Strontium, Sr2 2. Calculate the energy associated with the light emitted by each of the K', Ca*2 and Li. Ca 2 Ba*2 s Flame Tests & Electron Configuration FLAME TESTS & ELECTRON CONFIGURATION INTRODUCTION AND BACKGROUND The chemistry of an element strongly...
B3. An octahedral transition metal complex with the structure shown below was isolated from the reaction...
B3. An octahedral transition metal complex with the structure shown below was isolated from the reaction of CoCl2.6H20 and one equivalent of the organic ligand diethylenetriamine, H2NCH2CH2NHCH2CH2NH2, after oxidation with air and addition of Naci. I-Z H2N,,, NH2 com CICI a) Draw the structure for a different geometric isomer of the product which may also form from the same reaction, AND label the complex you have drawn with an appropriate stereochemical descriptor. The complex shown on the previous page is...
2. For each of the following compounds, 1) write the formal oxidation state of the transition...
2. For each of the following compounds, 1) write the formal oxidation state of the transition metal and 2) the corresponding number of d electrons. 3) State whether or not each one is likely to be stable enough to be characterized. (a) [Re(CO)5] (b) [Cr(η6 -C6H6)2] (c) [Mo(CO)3(PPh3)3] (d) [Fe(η2 -C2H4)(CO)4] (e) [Zr(η5 -C5H5)Cl(OH)] (f) [Co(η5 -C5H5)2] 3. Identify the first-row transition metal (M) that follows the 18-electron rule for each of the following compounds (show how you arrived at...
1. Riboflavin is an important nutrient required for a number of biochemical processes that produce energy...
1. Riboflavin is an important nutrient required for a number of biochemical processes that produce energy in our bodies. Which of the following statements about riboflavin is NOT true the yellow color of a riboflavin containing solution is due to the absorption of light by the sugar component of the molecule it name is derived from the two principal compounds that make up the molecule we know as riboflavin the heterocycering component is a type of avonoid vering component is...
1. What distinguish a transition metal from a main group metal? 2. Why is zinc not considered a transition metal? 3. Write the electronic configuration of the following ions; V". Cr, Mn, Fe, Ni, Ti" 4. What are basic assumptions of Crystal Field Theory? 5. Compounds containing the Scion are colorless whereas those containing Ti* ion are colored. Explain. 6. Predict the number of unpaired electrons in [Cr(en) ions. 7. What are spectrochemical series? 8. The compound hexaminecobalt(III) chloride is...
The electronic absorption spectrum UI (Cr(NH3)6]3+ (aq) is shown in Figure 11.5. One of the observed peaks is centered at about 303 nm. 1.a. What is the approximate value of the wavelength for the two other peaks? Which one of these three peaks falls in the visible region of the electromagnetic spectrum? The wavelength at this peak is (Amax), and this transition accounts for the color of the complex ion in solution. The energy of the transition occurring at...
Explain, in as much detail as possible, how these two figures
are related. Some terms to include in your explanation are
emission, absorption, photon, spectrum, wavelength, light,
electron.
Show all of your work in arriving at your final answer.
ammun Four excited states Energy hom n Ground state 410 nm 434 nm 486 mm 656 nm
Name Lab Day circled: Mon. Tues. AM Tues, PM Wed Thurs. Fri. Prelaboratory Exercise for the Atomic Emission and Absorption Experiment The spectroscopes used in our lab are scaled in nanometer units. You will work with three of the four possible Balmer series transitions of Hydrogen whose lines are in the visible region of the electromagnetie spectrum. Electrons absorb energy from n-2 level and depending on how much energy is absorbed, they are excited to different higher energy levels. From...
1. Titanium metal requires a photon with a minimum energy of 6.94 x 10- J to emit electrons. a. What is the minimum frequency of light necessary to emit electrons from titanium via the photoelectric effect? b. What is the wavelength of this light? c Is it possible to eject electrons from titanium metal using visible light? 2. Calculate the energies of an electron in the hydrogen atom when n=2 and when n=6. Calculate the wavelength of the radiation released...
PRE-LABORATORY QUESTIONS (For full credit show your calculations) 1. List the expected color of light and the corresponding wavelength (nm) associated with each cation (use Table 1) Rubidium, Rb Cesium, Cs 2. Calculate the energy associated with the light emitted by each of the elements above (sue equations 1 and 2) Rubidium, Rb Cesium, Cs 11:17 $3.us-east-1.amazonaws.com Flame Tests&Elecrn Ceniguaion 1 of 7 FLAME TESTS & ELECTRON CONFIGURATION INTRODUCTION AND BACKGROUND The chemistry of an element strongly depends on the...
the
date is 4/09/19
POST-LABORATORY QUESTIONS (For full credit show your calculations). us T able enced color of light and the coresponding wavelength (om) associated with each cation Barium, Ba2 Copper, Cu2 Sodium, Na Calcium, Ca2 Potassium, K Strontium, Sr2 2. Calculate the energy associated with the light emitted by each of the K', Ca*2 and Li. Ca 2 Ba*2 s Flame Tests & Electron Configuration FLAME TESTS & ELECTRON CONFIGURATION INTRODUCTION AND BACKGROUND The chemistry of an element strongly...
B3. An octahedral transition metal complex with the structure shown below was isolated from the reaction of CoCl2.6H20 and one equivalent of the organic ligand diethylenetriamine, H2NCH2CH2NHCH2CH2NH2, after oxidation with air and addition of Naci. I-Z H2N,,, NH2 com CICI a) Draw the structure for a different geometric isomer of the product which may also form from the same reaction, AND label the complex you have drawn with an appropriate stereochemical descriptor. The complex shown on the previous page is...
1. Riboflavin is an important nutrient required for a number of biochemical processes that produce energy in our bodies. Which of the following statements about riboflavin is NOT true the yellow color of a riboflavin containing solution is due to the absorption of light by the sugar component of the molecule it name is derived from the two principal compounds that make up the molecule we know as riboflavin the heterocycering component is a type of avonoid vering component is...
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