What is the threshold frequency ν0 of cesium? Electrons are emitted from the surface of a metalwhen it's exposed to light. This is called thephotoelectric effect. Each metal has a certainthreshold frequency of light, below which nothinghappens. Right at this threshold frequency, anelectron is emitted. Above this frequency, theelectron is emitted and the extra energy istransferred to the electron.The equation for this phenomenon isKE= hv - hvo-where KE is the kinetic energy of the emittedelectron, h 6.63 × 10-34 J.s is Planck'sconstant, is the frequency of the light, and visthe threshold frequency of the metal.Also, since E = hv, the equation can also bewritten asKE=E-Owhere E is the energy of the light and is thebinding energy of the electron in the metal. Here are some data collected on a sample of cesium exposed to various energies of light.Light energy Electron emitted? Electron KE(eV)(eV)2.122.132.142.152.16nonoyesyesyes00.010.02*Note that 1 eV (electron volt) = 1.60 × 10-¹⁹ J.

Photoelectric effect: The spontaneous emission of electrons from the surface of metals when light or…

Here are some data collected on a sample of cesium exposed to various energies of light. Light energy Electron emitted? Electron KE (eV) (eV) 2.12 2.13 2.14 2.15 2.16 no no yes yes yes - 0 0.01 0.02 *Note that 1 eV (electron volt) = 1.60 × 10-¹⁹ J.

Here are some data collected on a sample of cesium exposed to various energies of light. Light energy Electron emitted? Electron KE (eV) (eV) 2.12 2.13 2.14 2.15 2.16 no no yes yes yes - 0 0.01 0.02 *Note that 1 eV (electron volt) = 1.60 × 10-¹⁹ J.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter5: Electron Configurations And The Periodic Table

Section: Chapter Questions

Problem 114QRT

See similar textbooks

Related questions

Q: Jonathan is carrying out an investigation about molecular motion and heat transfer. What is the…

A: Jonathan is carrying out an investigation about molecular motion and heat transfer. So he is…

Q: Show the mechanism for the following transformation. Describe the steps. I. H heat H H heat

A: 4n-pi system ----> thermal condition -----> Conrotation [4n +2] system ----> thermal…

Q: The reaction below has an equilibrium constant of 4.301x10 -4. Which statement correctly describes…

A: If K > 103, products are favoured at equilibrium If K< 10-3, reactants are favoured at…

Q: c. Using the average atomic mass of lithium, calculate the mass (in amu) of 8.60 x 1023 of lithium…

Q: Draw out the Lewis structures of these reactants and products and apply the analysis indicated in…

A: Redox reaction : The reactions in which oxidation and reduction takes place simultaneously are…

Q: 1. Calculate the enthalpy change, ΔHΔ�, for the process in which 43.6 gg of water is converted from…

A: Given that mass of water = 43.6 g Initial temperature = 19.3 °C Final temperature = 25.0 °C…

Q: Consider a solution that is 2.0×102 M in Fe² and 1.4×102 M in Mg2+ (Kap for FeCO3 is 3.07 x 10-11…

A: Answer: For any sparingly soluble salt, precipitation begins when its ionic product becomes equal to…

Q: 7.4. Determine the distribution coefficient required to extract 90 percent of a pollutant using no…

A: The question is based on solvent extraction. it uses the principle of nernst distribution law. it…

Q: O CH₂C-O_CCH₂ -CH₂CH₂OH a. Draw the structure of the tetrahedral Intermediate INITIALLY FORMED In…

A: The reaction between acetic anhydride and 2-phenyl ethanol produces 2-phenylethylacetate.

Q: Provide the systematic name of the cyclic monosaccharide shown here Be sure to include the…

Q: Draw the mechanisms for the reaction below and explain why the disulphide product is formed. H₂S,…

A: The reacting substrate is a conjugated ester and the nucleophile is H2S which is a soft nucleophile.…

Q: Provide names for the following five oxygen containing organic molecules.

A: we have to name the given structures

Q: a. C. Determine the reaction order of each of the following reactants. -13 2- e. 1 0- 0 Time (s) 0…

A: The rate of a chemical reaction is defined as the change in concentration of a reactant or product…

Q: C4H9Cl (isomer 1) C4H9CI (isomer 2) C4H9CI (isomer 3) C4H9CI (isomer 4) Experiment 10 Introduction…

A: The question is based on the concept of isomers. isomers are the compounds having same molecular…

Q: 10. How many joules are required to heat 500. g of water from room temperature 25.0 C to past…

A: Given that the water of mass 500 g at 25°C is heated to 115°C So during the transition, First…

Q: Determine the pH of a buffer solution by constructing an ICE table, writing the equilibrium constant…

Q: The number of different monochlorinated constitutional isomers produced when each of the following…

A: Given that, two compounds are shown below We have to determine the number of different…

Q: What is the expression for the equilibrium constant (k c) for the reaction below? A 3B 2 (g) + C 3…

A: Since, Equilibrium constant or Kc is the ratio of the equilibrium concentrations of product over…

Q: Explain the occurrence of P and R branches in the rotational fine structure of a vibrational…

A: The rotational fine structure arises from the interaction between the rotational motion and the…

Q: Label the stereogenic center(s) in each drug as R or S. L-Dopa is used to treat Parkinson's disease…

A: Stereogenic centre: A carbon with 4 different atoms or groups attached to it

Q: What is the correct IUPAC name for the compound shown here? sh

A: IUPAC nomenclature rules for alkanes: • Identify the longest continuous carbon chain. • Identify the…

Q: OH Ag(NH3)2OH H2O

A: Reaction will not occur as the reagents used is Tollens reagent.It shows only positive test for…

Q: What is the product of the following transformation? H₂O, H* heat 1 2 3 4 OH is the Im NH₂ OH 3 1…

Q: zn²+ CH₂CH3 OCH 3

A: By taking Cram's model in discussion, we can explain this question.

Q: Nickel carbonyl decomposes to form nickel and carbon monoxide, like this: Ni (CO) 4(9)→Ni(s)+4 CO(g)…

A: Equilibrium constant Kc for a reaction is defined as the product of the molar concentrations of the…

Q: Fill in the blanks During titration, the solution with the unknown concentration is called the…

A: Filling the blanks with appropriate answer given below.

Q: Ph-Me A Ph Ph B LOTS Me Me Ph NaOH Me C Ph D Ph E Me

Q: 1 || Which of the following show the correct stability order of above radicals? |||

Q: Complete the table below for calculating the molar mass of the lonic compound iron (II) sulfide.…

A: Since, Molar mass of the compound is the sum of molar mass of each atom present in the molecule.…

Q: A researcher studying the nutritional value of a new candy places a 3.30 g sample of the candy…

A: Given => Mass of candy sample = 3.30 g Temperature increase = ∆T = 2.02 °C…

Q: Calculate the pH for each of the cases in the titration of 25.0 mL of 0.200 M pyridine, C, H,N(aq)…

A: We have to calculate the pH

Q: Identify the missing products A and B in the following transformation? CI OH a) A = 2 and B = 4 b) A…

A: The question is based on organic reactions. we need to identify the product formed and explain…

Q: Refer to the following unbalanced equation: CoH14 + O2 ---> CO2 + H2O What mass of oxygen (O₂) is…

A: From balance reaction 2 mole of C6H14 react with 19 mole of oxygen molecules

Q: Student Name: Experimental: Part I: (standardization of NaOH) Mass of KHP: Moles of KHP: Initial…

A: “Since you have posted multiple questions with multiple subparts, we will provide the solution…

Q: The precent yield of this reaction is 78%. 2Al(s) + 3 F2 (g) = 2AlF3 (s) Determine the mass, in…

Q: When the following bridged bicyclic alkene undergoes hydroboration-oxidation, how many produ…

A: Hydroboration-oxidation reaction is a two step hydration reaction to get an alcohol from an alkene.…

Q: c. Classify the reaction represented by the following unbalanced equation by as many methods as…

A: Aqueous reactant produce solid product then this reaction is precipitation reaction. When reaction…

Q: What is the mechanism for the synthesis of polystyrene, using the tert-butyl peroxy-benzoate…

A: We have to write the mechanism for the synthesis of polystyrene, using the tert-butyl…

Q: Combustion of hydrocarbons such as nonane (C₂H2₂0) produces carbon dioxide, a "greenhouse gas."…

A: Given Combustion of Nonane Amount of nonane = 0.200 kg = 200 g = m Molar mass of nonane = 128.259…

Q: Arrange the following carbocations in order from least to most stable. First, expand the structures…

Q: Use the correct chart above to predict the products for the following reaction: K(s) + CuCl₂ (aq)…

A: Less is the reduction potential of species more is the reactivity and hence it can displace other…

Q: 'm confused as to how the final product should look because I submitted the one in the picture, but…

A: To predict the product of the epoxidation of 1-methyl cyclopentene using mCPBA.

Q: Determine the standard cell potential for a voltaic cell made of a Ag strip and an Al strip immersed…

A: The standard cell potential (Eocell) is given by: Ecello=Ecathodeo-Eanodeo Electrode with higher…

Q: Give an IUPAC name for the compound below. Accepted names for branched alkyl groups are Isopropyl,…

A: The basic skeleton of IUPAC nomenclature is " Prefix + Parent carbon + suffix" Parent carbon chain…

Q: mixture of He, Ne, and Ar has a pressure of 11.80 atm at 25.0°C. If the partial pressure of He is…

A: According to Dalton law of pressure total pressure exerted by gaseous mixture is equal to sum of…

Q: Determine the pH at the equivalence point of a titration of 100.0 mL of 0.201 M HNO₂ solution with…

A: Answer: Conjugate base of weak acid conjugate acid of weak base gets hydrolyzed in water their…

Q: What volume of ClF3 will be produced when 75.0ml of F2 reacts with 25.0 mL of Cl2 according to the…

Q: 2. Write a balanced double replacement reaction for each of the following sets of aqueous reagents.…

A: Dear learner as per our guildeline,I can solve only 1 question at once. Please find the solution of…

Q: dentify the signals you would expect in the diagnostic region of the IR spectrum for the following…

A: The question is based on the concept of IR spectroscopy. we need to assign the characteristic bands…

Question

What is the threshold frequency ν0 of cesium?

Electrons are emitted from the surface of a metal
when it's exposed to light. This is called the
photoelectric effect. Each metal has a certain
threshold frequency of light, below which nothing
happens. Right at this threshold frequency, an
electron is emitted. Above this frequency, the
electron is emitted and the extra energy is
transferred to the electron.
The equation for this phenomenon is
KE= hv - hvo
-
where KE is the kinetic energy of the emitted
electron, h 6.63 × 10-34 J.s is Planck's
constant, is the frequency of the light, and vis
the threshold frequency of the metal.
Also, since E = hv, the equation can also be
written as
KE=E-O
where E is the energy of the light and is the
binding energy of the electron in the metal.

Here are some data collected on a sample of cesium exposed to various energies of light.
Light energy Electron emitted? Electron KE
(eV)
(eV)
2.12
2.13
2.14
2.15
2.16
no
no
yes
yes
yes
0
0.01
0.02
*Note that 1 eV (electron volt) = 1.60 × 10-¹⁹ J.

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1: This is a numerical based on Photoelectric effect

VIEW

Step 2 The Equation

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.

Similar questions

The figure below represents part of the emission spectrum for a one-electron ion in lhe gas phase. All the lines result from electronic transitions from excited states to the n = 3 state. (See Exercise 160.) a. What electronic transitions correspond to lines A and B? b. If the wavelength of line B is 142.5 nm, calculate the wavelength of line A.
6.29 A mercury atom emits light at many wavelengths, two of which are at 435.8 and 546.1 nm. Both of these transitions are to the same final state. (a) What is the energy difference between the two states for each transition? (b) lf a transition between the two higher energy states could be observed, what would be the frequency of the light?
Until recently, it was thought that Ca was unstable, and that the Ca atom therefore had a negative electron affinity. Some new experiments have now measured an electron affinity of +2.0kJmol1 for calcium. What is the longest wavelength of light that could remove an electron from Ca ? In which region of the electromagnetic spectrum does this light fall?
The most prominent line in the emission spectrum of aluminum is at 396.15nm. What is the frequency of this line? What is the energy of one photon with this wavelength? Of 1.00 mol of these photons?
One bit of evidence that the quantum mechanical model is correct lies in the magnetic properties of matter. Atoms with unpaired electrons are attracted by magnetic fields and thus are said to exhibit pararamagnetism. The degree to which this effect is observed is directly related to the number of unpaired electrons present in the atom. Consider the ground-state electron configurations for Li, N, Ni, Te, Ba, and Hg. Which of these atoms would be expected to be paramagnetic, and how many unpaired electrons are present in each paramagnetic atom?
Cesium was discovered in natural mineral waters in 1860 by R. W. Bunsen and G. R. Kirchhoff, using the spectroscope they invented in 1859. The name came from the Latin caesius ("sky blue") because of the prominent blue line observed for this element at 455.5 nm. Calculate the frequency and energy of a photon of this light.
Spectroscopists have observed He+ in outer space. This ion is a one-electron species like a neutral hydrogen atom. Calculate the energy of the photon emitted for the transition from the n = 5 to the n = 3 state in this ion using the equation: En = − Z2/n2 (2.179 × 10−18 J). Z is the positive charge of the nucleus and n is the principal quantum number. In what part of the electromagnetic spectrum does this radiation lie?
6.17 The laser in most supermarket barcode scanners operates at a wavelength of 632.8 nm. What is the energy of a single photon emitted by such a laser? What is the energy of one mole of these photons?
What type of relationship (direct or inverse) e xists between wavelength, frequency, and photon energy? What does a photon energy unit of a joule equal?
6.28 A neon atom cmi light at many wavelengths, two of which are at 616.4 and 638.3 nm. Both of these transitions are to the same final state. (a) What is the energy difference between the two states for each transition? (b) If a transition between the two higher energy states could be observed, what would be the frequency of the light?
The outermost electron in an alkali-metal atom is sometimes described as resembling an electron in the corresponding state of a one-electron atom. Compare the first ionization energy of lithium with the binding energy of a 2s electron in a one-electron atom that has nuclear charge Zeff , and determine the value of Zeff that is necessary for the two energies to agree. Repeat the calculation for the 3s electron of sodium and the 4s electron of potassium.