The Rydberg constant for Li+2 is 2.18 x 10-18 J. ( Z = 3 for Li+2,...
The Rydberg constant for Li+2 is 2.18 x 10-18 J. ( Z = 3 for Li+2, use an equation that enables you to allow for the difference between the nuclear charges of Li and Hydrogen)
a) What is the longest wavelength seen in the visible absorption spectrum of Li+2 at ordinary temperatures?
b) What would be the shortest wavelength seen in the visible absorption spectrum of Li+2.
c) Calculate the ionization energy of Li+2.
Homework Answers
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The Rydberg constant for Li+2 is 2.18 x 10-18 J. ( Z = 3 for
Li+2,...
Using the equation for an H-atom: E_n = (-h_cR_H) (1/h^2) = (-2.18 times 10^-18 J) (1/n^2)...
Using the equation for an H-atom: E_n = (-h_cR_H) (1/h^2) = (-2.18 times 10^-18 J) (1/n^2) A) Calculate the energy of an electron in the hydrogen atom when n = 2 and when n = 6. B) Calculate the wavelength of the radiation released when an electron moves from n = 6 to n = 2. C) Is this line in the visible region of the electromagnetic spectrum? If so, what color is it?
Evaluate the ratio Ry hc where the Rydberg constant, Ry = 2.18 x 1018 J, Z-1, Planck's constant, h 6.626076 x 10-34 J s...
Evaluate the ratio Ry hc where the Rydberg constant, Ry = 2.18 x 1018 J, Z-1, Planck's constant, h 6.626076 x 10-34 J s, and c is the speed of light, c- 2.9979x 108 m/s. Express the answer in nanometers (1 nm 1x109 m).
3. Besides H, list other hydrogen like species in which the Rydberg constant in eq. 3...
3. Besides H, list other hydrogen like species in which the Rydberg constant in eq. 3 would still be 1.10 x 10"? 4. Is a Het 5-3 transition in the visible range? Calculate and explain. 5. Are there any electronic transitions of Het involving energy levels 1, 2 and 3 which are in the visible range? That is, will He emit any visible photons when the electrons fall from any level to levels 1, 2, and 3? If not, show...
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...
fill in the blanks pls LI TIe (kJ/photon) for each calibrated wavelength and then esponding energy...
fill in the blanks pls
LI TIe (kJ/photon) for each calibrated wavelength and then esponding energy (k.J/mol) per mole by using Avogadro's number. (.5d (c) Using Figurel determines the values of quantum numbers ni and for the initial and Trattatert the transitions that give rise to each line. ectr 1 . is с я Wavelength from the calibration graph (nm) Photon energy Value of n (initial state) Value of n (final state) (kJ/mol) S4L10a 419, к) п 430.00 219Kfa 2...
RH = 2π2μZ2e4 (4πε0)2h2 1/μ = 1/me + 1/mnucleus , where me = mass of electron...
RH = 2π2μZ2e4 (4πε0)2h2 1/μ = 1/me + 1/mnucleus , where me = mass of electron = 5.4858 x 10–4 u and mnucleus = mass of nucleus. RH =2.17868891 x 10–18 J = 1.09677759 x 107 m–1 Note that the value of RH in m-1 is the energy in wavenumbers; this what you get when you divide RH in Joules by h and c; it corresponds to 1/λ, the number of waves per meter. 1. Using the equation E=RH (1/nl2...
05 Question (4 points) When a hydrogen atom absorbs a photon of electromagnetic radiation (EMR), the...
05 Question (4 points) When a hydrogen atom absorbs a photon of electromagnetic radiation (EMR), the internal energy of the atom increases and one or more electrons may be energized into an excited state. The release of this extra energy as the excited state electron transitions back to a lower energy state results in the emission of a photon. These energy changes are responsible for the emission spectrum of hydrogen (shown below) and are described by the Bohr equation. AE...
Q1) The lowest frequency available on a radio's AM dial is 570 kilohertz (kHz). What is...
Q1) The lowest frequency available on a radio's AM dial is 570 kilohertz (kHz). What is the wavelength of this light? Select one: a. 1.8 X 10-6 m b. 5.3 X 102 m c. 1.8 X 10-7 m d. 5.3 X 104 m e. 1.9 X 10-3 m Q2) Many handheld laser pointers emit 650 nm light. What is the frequency of this light? Select one: a. 5.1 X 10-3 Hz b. 2.2 X 10-15 Hz c. 4.6 X 1014...
Chemist Hydrogen Spectrum Drac 8 m/s = 4.487 X 10' Lab A10 W est 2010 (2)...
Chemist Hydrogen Spectrum Drac 8 m/s = 4.487 X 10' Lab A10 W est 2010 (2) 1. For each of the obse of the observed wavelengths in the hydrogen spectrum, calculate the energy of each photon emited. 110nm - E-hc 6.626 xE-345s 3.00xE8 m/s - 4.8483 x 1015 j 7 41xE-7AM 104 nm -> E he= 6.626x E-3935 <0.00 xE8 ms - 4.481 -19 4.34E-7m. 186 nm - E= he = 6.626 xE-34 35 X 3.00 xE8B/s, 4.090 x 10...
answer is not 122 or 97.2 Review Constants Let's use the Bohr model equations to explore...
answer is not 122 or 97.2
Review Constants Let's use the Bohr model equations to explore some properties of the hydrogen atom. We will determine the kinetic, potential, and total energies of the hydrogen atom in the n=2 state, and find the wavelength of the photon emitted in the transition n = 2 →n=1. En= 1 med 602 8nºh? -13.6 eV 722 These two equations are equal only if the coefficients of 1/n2 are equal: met =hcR= 13.6 eV 8€0h?...
Using the equation for an H-atom: E_n = (-h_cR_H) (1/h^2) = (-2.18 times 10^-18 J) (1/n^2) A) Calculate the energy of an electron in the hydrogen atom when n = 2 and when n = 6. B) Calculate the wavelength of the radiation released when an electron moves from n = 6 to n = 2. C) Is this line in the visible region of the electromagnetic spectrum? If so, what color is it?
Evaluate the ratio Ry hc where the Rydberg constant, Ry = 2.18 x 1018 J, Z-1, Planck's constant, h 6.626076 x 10-34 J s, and c is the speed of light, c- 2.9979x 108 m/s. Express the answer in nanometers (1 nm 1x109 m).
3. Besides H, list other hydrogen like species in which the Rydberg constant in eq. 3 would still be 1.10 x 10"? 4. Is a Het 5-3 transition in the visible range? Calculate and explain. 5. Are there any electronic transitions of Het involving energy levels 1, 2 and 3 which are in the visible range? That is, will He emit any visible photons when the electrons fall from any level to levels 1, 2, and 3? If not, show...
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...
fill in the blanks pls
LI TIe (kJ/photon) for each calibrated wavelength and then esponding energy (k.J/mol) per mole by using Avogadro's number. (.5d (c) Using Figurel determines the values of quantum numbers ni and for the initial and Trattatert the transitions that give rise to each line. ectr 1 . is с я Wavelength from the calibration graph (nm) Photon energy Value of n (initial state) Value of n (final state) (kJ/mol) S4L10a 419, к) п 430.00 219Kfa 2...
05 Question (4 points) When a hydrogen atom absorbs a photon of electromagnetic radiation (EMR), the internal energy of the atom increases and one or more electrons may be energized into an excited state. The release of this extra energy as the excited state electron transitions back to a lower energy state results in the emission of a photon. These energy changes are responsible for the emission spectrum of hydrogen (shown below) and are described by the Bohr equation. AE...
Chemist Hydrogen Spectrum Drac 8 m/s = 4.487 X 10' Lab A10 W est 2010 (2) 1. For each of the obse of the observed wavelengths in the hydrogen spectrum, calculate the energy of each photon emited. 110nm - E-hc 6.626 xE-345s 3.00xE8 m/s - 4.8483 x 1015 j 7 41xE-7AM 104 nm -> E he= 6.626x E-3935 <0.00 xE8 ms - 4.481 -19 4.34E-7m. 186 nm - E= he = 6.626 xE-34 35 X 3.00 xE8B/s, 4.090 x 10...
answer is not 122 or 97.2
Review Constants Let's use the Bohr model equations to explore some properties of the hydrogen atom. We will determine the kinetic, potential, and total energies of the hydrogen atom in the n=2 state, and find the wavelength of the photon emitted in the transition n = 2 →n=1. En= 1 med 602 8nºh? -13.6 eV 722 These two equations are equal only if the coefficients of 1/n2 are equal: met =hcR= 13.6 eV 8€0h?...
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