An electron microscope employs a beam of electrons to obtain an image of an object (you can see electron microscopes on the first floor of LPSC). What energy must be imparted to each electron of the beam to obtain a wavelength of 10.0 pm? Report the energy in electron volts (eV) (1eV = 1.602 × 10−19 J). Hint: KE = ½mv2 .

Q: What is the wavelength of the light it absorbs as it passes from n = 2 to n = 4?

A: To find the wavelength, firstly we will find the energy difference . After , we will find wavelength…

Q: If a hydrogen atom undergoes a transition fromn=1 (E = 4.17 x 10-19 ) to n = 3 (E = 8.62 x 10 19 J).…

A: We have given that  If a hydrogen atom undergoes a transition from n=1 (E=4.17 x 10-19 J) to n-3 (E=…

Q: The yellow colour in fireworks is often achieved by heating Sodium (I) chloride (NaCI) to about…

A: Given : The wavelength of light emitted = 520 nm = 520 X 10-9 m                        (since 1 m =…

Q: What is the wavelength of light (nm) that has a frequency 4.62 x 1014 s1? 1.39 x 1023 nm 1.54 x 103…

A:

Q: The radiation emitted in the transition from n = 3 to n = 2 in a neutral hydrogen atom has a…

A:

Q: What is the wavelength (in meters) of the light emitted when transition from n=5 to n=2

A: We can use Rydberg's equation to solve this problem.

Q: 1. What is the energy of a photon of 8.70 x 106 micrometers?

A:

Q: A lithium flame has a characteristic red color due to emis-sions of wavelength 671 nm. What is the…

A: Conversion of nm into m:   The energy of 1 mol of photon is given by: where n is the no. of…

Q: In photoelectron spectroscopy, an electron is ejected from an atom by the collision of a UV photon…

A: The ionization energy of the Potassium can be calculated as -

Q: Which of the combinations below are possible quantum numbers for a 7 d orbital? O1= 2, m = 0 O1= 1,…

A: The quantum number l is called the azimuthal quantum number, it denotes the sub-shell. l = 0 (s…

Q: Calculate the wavelength, in nanometers, of visible light having a frequency of 4.37 x 10 14s -1.

A:

Q: Calculate the wavelength of light that would be emitted for the orbital transition of n = 4 to %3D n…

A: ni = 4 nf = 1

Q: What is the frequency of radiation of wavelength 240 nm? Give your answer in Megahertz (MHz). Nb. 1…

A: Write the relationship between speed of light, frequency and wavelength of radiation. c=λν c is the…

Q: a) What is the wavelength in nanometres of light emitted by the helium ion (He2+) when it captures…

A: The answer is given as follows

Q: 12. The energy required to excite an atom from level n=1 to level n=2 is 1.43 x 10-17 J. Calculate…

A:

Q: A photon of light produced by a surgical laser has an energy of wavelength of 6.57 x 10-7 m.…

A: The energy of photon can be calculated by using formula

Q: An EM wave has a wavelength of 1.54 angstroms. What is the frequency of this wave? What is the…

A: The relationship between the wavelength and frequency is given by fλ = c where f = frequency of wave…

Q: A liquid is exposed to infrared radiation with a wavelength of 2.74 x 104 cm. Assume that all the…

A:

Q: Calculate the wavelength (in nm) of a the red light emitted by a neon sign with a frequency of 5.00…

A: Given :- frequency of light = 5.00 × 1014 Hz  To calculate :- wavelength of light (in nm)

Q: What is the wavelength of light having a frequency of 4.27 x 104 Hz? O 585 O 702 O 641 O 522

A: Given data,Frequency(ν)=4.27×1014Hz The wavelength of a light is inversely proportional to the…

Q: 4. The red light from a helium-neon laser has a wavelength of 633 nm. What is the energy of one…

A: Since the energy of each photon is given by  E = hc/ λ where E = energy of 1 photon  h = Plank's…

Q: How much energy (J) is carried by one photon of (a) red light with l 5 650 nm? (b) violet light with…

A: To Find: To find the energy of one photon and energy of a mole photon at a red light and violet…

Q: Iron has a work function (0) of 4.50 eV. What is the longest wavelength of light, in nm, that will…

A: W = W° + K.E  W° = WORK FUNCTION

Q: Calculate the energy in joules of an X-ray photon with a wavelength of 2.35 Å.

A:

Q: What is the wavelength (in nm) of a photon if the energy is 7.27 x 10- 19 J? (h = 6.626 x 10 34 J•…

A: Given :- energy of a photon = 7.27 × 10-19 J  h = 6.626 × 10-34 J.s  To calculate :-  wavelength of…

Q: 7.10 An x-ray has a wavelength of 1.3 Å. Calculate the energy (in J) of one photon of this…

A: Given: λ=1.3 AoSince 1 Ao=10-10 mλ=1.3 Ao×10-10 m1 Ao  =1.3×10-10 m

Q: The blue solution formed when an alka li metal dissolves in liquid ammonia consists of the metal…

A:

Q: Consider the atomic spectrum of hydrogen to answer the following questions: What is the ΔE…

A: Given: Higher energy shell n = 5 Lower energy shell n = 2

Q: In Einstein's photoelectric experiment, the kinetic energy (K.E.) of an electron displaced from a…

A:

Q: 3) An electron within a hydrogen atom absorbs a photon and jumps from n =1 to n 4. It then relaxes…

A: NOTE : Since you've asked multiple questions,we'll solve the first question for you.If you want any…

Q: What is the frequency of electromagnetic radiation with wavelength 532 nm? (c = 3.00 × 108 m/s)

A:

Q: What is the wavelength (in nm) of a photon if the energy is 7.49 x 1019 J? (h = 6.626 x 10 34 J•s)

A:

Q: A laser pointer used in a lecture hall emits light at 650 nm.What is the frequency of this…

A: GIVEN, wavelength(λ)=650nm=650×10-9m                                   =6.5×10-7m. Speed of…

Q: The longest wavelength of light that can be absorbed by N2 is ~80 nm, while the longest wavelength…

A:

Q: In Einstein's photoelectric experiment, the kinetic energy (K.E.) of an electron displaced from a…

A: Given, Work function of lead, threshold energy, Φ = 6.81 × 10-19 J Wavelength of light, λ = 51.5 nm…

Q: The blue color in some fireworks occurs when copper(I) chloride is heated toapproximately 1500 K and…

A:

Q: calculate the wavelength of the transition from n=6 to n=4 for the hydrogen atom. what is the energy…

A: We have to calculate the wavelength and energy of transition.

Q: Calculate the wavelength (in nm) of the blue light emitted by a mercury lamp with a frequency of…

A: Given:Frequency (ʋ) = 6.88×1014 Hz = 6.88×1014 s-1.Velocity of light (c) = 3×108 m.s-1.

Q: 2. What is the frequency of an X-ray radiation of wavelength 9.41 x 10 1° m?

A:

Q: Calculate the wavelength (in nm) of the blue light emitted by a mercury lamp with a frequency of…

A: Given, frequency = 6.32 x 1014 Hz Speed of light , c = 3 x 108 m/s  Wavelength = ?

Q: For potassium (K), the work function equals 3.669 x 10 19 J (per photon). a) What is the minimum…

A:

Q: Calculate the wavelength of the green line in the visible spectrum of excited H atoms. The green…

A: The question is based on the concept of atomic structure. we have to calculate wavelength for the…

Q: Calculate the wavelength of light with energy 1.32 × 10−23 J per photon?

A:

Q: A dye molecule has electrons that are free to travel up and down a chain of atoms, giving electron…

A:

Q: What is the wavelength (in nanometers) of electromagnetic radiation that has an energy of 4.71…

A: Given  Energy ( E ) = 4.71 × 10-19 Joule  Wavelength ( λ ) =  ?

Q: What is the value of this constant, in units of J s? Photon Energy: 4.51 × 10-19 J Frequency: 6.79 ×…

A:

Q: The speed of sound in dry air at 20 °C is 343 m/s and the lowestfrequency sound wave that the human…

A: (a) Wavelength : λ = vf = 34320  =  17.15 m   (b)  f = cλ = 3 x 10817.15 = 1.75 x 107 Hz

Quantum Chemistry

Quantum chemistry deals with the properties of chemical systems and their reactions. The branch of chemistry which is more concerned with quantum chemistry is physical chemistry. It is a more sophisticated field of theoretical physics which is concerned towards the application of physical concepts towards various chemical aspects such as, formation of atoms, chemical structure descriptions, chemical bond strength, hybridization, conjugation etc. Quantum chemistry mainly studies the various states i.e., ground state, excited state, transition states of the individual atoms or molecules taking place during any chemical reaction. The laws of motion explained by various scientists, which are termed as “classical mechanics” were not acceptable in terms of electrons, protons, atoms, light etc. Thus, a new theory named “quantum mechanics” emerged to understand the basic framework of various atomic and subatomic particles.