The materials called phosphors that coat the inside of a fluorescent lamp convert ultraviolet radiation (from the mercury-vapor discharge inside the tube) into visible light. Could one also make a phosphor that converts visible light to ultraviolet? Explain.

Q: While an FM radio station broadcasts at a frequency of 94.7 MHz, an AM station broadcasts at a…

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Q: The rays of the Sun that cause tanning and burning are in the ultraviolet portion of the…

A: We are authorized to answer three subparts at a time since you have not mentioned which part you are…

Q: What important constant was determined using data from the photoelectric effect experiments?…

A: The experiment of discharge of electrons from a specific metal surface when different…

Q: Why do atoms, when excited withenergy, emit light only at particular wavelengths?

A: When atoms gain energy , there is always excitation of energy. They get excited and move to higher…

Q: A foolish man attempted to rob a bank but only brought his red laser pointer, with a wavelength of…

A:

Q: Ultraviolet light haslonger wavelengths than visible light. is it true/false ?

A: Electromagnetic spectrum- Electromagnetic spectrum gives the range of frequency of of…

Q: You are given the kinetic energy of ejected electrons as a function of wavelength for three…

A: It states that when a radiation of sufficient frequency strikes a metal surface, ejection of…

Q: How does light emitted from a neon sign differ from sunlight?

A: When an atoms absorbs energy and release it, then it gives a spectrum of different colors. This type…

Q: A ground state hydrogen atom absorbs a photon of light having a wavelength of 92.05 nm. What is the…

A: Given, λ= 92.05 nm = 92.05 nm × 10-9 m/1nm = 9.205 × 10-8 m Formula for energy is E = hc/λ Where, h…

Q: Why do we not notice the wavelengths of moving objects such as automobiles?

A: Given information,   We not notice the wavelengths of moving objects such as automobiles

Q: Barium chloride (BaCl2) emits a green color when flame-tested. What can be said about the wavelength…

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Q: What are three deficiencies of the wave model of light related to light’s interaction with matter?

A: According to a Wave model for light, the light is made up of wave that vibrates up and down to the…

Q: The resolution limit of a microscope is roughly equal to the wavelength of light used in producing…

A:

Q: How many electrons in an atom can be described by the quantum number n = 2? number of electrons: How…

A: n is the principal quantum number. l is the azimethal quantum number and for:-  l = 0, s orbital  l…

Q: Consider an electron transitioning between two orbits in a hydrogen atom. If the wavelength of the…

A: Given : Wavelength of the energy emitted = 4055 nm Since 1 nm = 10-9 m Hence wavelength of the…

Q: A few different types of electromagnetic radiation are listed in the table below. Complete the table…

A: Let us firstly draw electromagnetic spectrum and than find out the order of given radiations.

Q: At a quantum level, the atoms of both glass and ground glass should be identical. Then, why do the…

A: Answer: Opaque nature of ground glass is due to the diffused reflectance of light. Ground glass is…

Q: calculate the wavelength of light in nanometers that corresponds to a frequency of 7.25 x 10^14 Hz

A: Given:  Frequency of light, v = 7.25 × 1014 Hz  Formula used:  Wavelength of light = speed of light…

Q: 5. An electron (a) falls from the n = 4 to the n = 2 orbit in a hydrogen atom and an electron (b)…

A: The wavelength of the photon can be found out using the Rydberg's formula: ν = 1λ= RH1n12 -…

Q: The Pauli Exclusion Principle tells us that no two electrons in an atom can have the same four…

A: For 3s orbital, possible value of each quantum number ?

Q: Imagine that you are playing a game of Clue in which Mrs. White is kille have a device in each room…

A: Only a certain part of the electromagnetic spectrum is visible to the human eye and this part is…

Q: number of spectral lines: wavelength range from:

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Q: what are the 17 sets of quantum numbers that discribe the 17 electrons of chlorine

A: There are total 4 sets of quantum numbers 1. Principle quantum number (n) : It indicates shells…

Q: A ground state hydrogen atom absorbs a photon of light having a wavelength of 93.03 nm. It then…

A: Answer:Here:

Q: A liquid is exposed to infrared radiation with a wavelength of 3.10 × 10–4 cm. Assume that all the…

A: Recall the following relation to calculate number of photons         E=nhν        E=nhcλWhere,…

Q: Consider the bright line spectrum of hydrogen shown in the figure below. Which line in the spectrum…

A: Given line spectra of hydrogen atom is : Options are : a). 434 nm b). 410 nm c). 656 nm d). 486 nm…

Q: Some copper compounds emit green light when they are heated in a flame. How would you determine…

A: When a light passes through a prism, the emitted light of different wave lengths will be separated…

Q: Which of the following statements about quantum theory is incorrect? The energy and position of an…

A: Filling of electron is done using  A) Aufbau principle B) Pauli exclusion principle C) Hunds rule

Q: It is possible to convert radiant energy into electrical energyusing photovoltaic cells. Assuming…

A: The wavelength of UV radiation and IR radiation is 100-400 nm and wavelength of IR is 780 nm -1mm…

Q: 12. A 368 g sample of water absorbs infrared radiation at 1.06 × 104 nm from a carbon dioxide laser.…

A: Mass of water = 368gSpecific heat of water = 4.184 J/go CTemperate = 5.00 oC

Q: Microwave ovens heat food by creating microwave electromagnetic radiation that is absorbed by water…

A: The amount of heat required to raise temperature is calculated as,

Q: A liquid is exposed to infrared radiation with a wavelength of 2.97 x 10 cm. Assume that all the…

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Q: Why is light of at least a certain frequency needed to cause the photoelectric effect? O A certain…

A: Photoelectric effect :- J.J Thomson observed that when a photon of having certain frequency strikes…

Q: Explain why the emission spectrum of an atom or molecule depends on its arrangement of electrons.

A: Electrons can be defined as the negatively charged particles that can revolve around nucleus in…

Q: What is the photon energy of light with a wavelength of 959 nm?

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Q: How many electrons in an atom can have the following sets of quantum numbers? Enter the maximum…

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Q: The conclusion you reached in the last question is quite general. It is not possible to resolve…

A: It is not possible to resolve features much smaller than the wavelength of the particles.

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.