A When atoms of an element are emitting a certain wavelength (or color) of light, it means that 2) the atoms have gained energy and electrons have jumped to an excited state. b) the atoms have gained energy and electrons have fallen back to the ground state. ) the atoms have lost energy and electrons have fallen back to the ground state. d) the atoms have lost energy and electrons have jumped to an excited state.

Q: Hydrogen gas has a density of 0.090 g/L, and at normal pressure and 3.28 C one mole of it takes up…

A: Hydrogen gas density = 0.090 g/LNormal pressuretemperature = 3.28 0CMole of hydrogen = 1 molvolume…

Q: Why are only certain wavelengths emitted from an atom?

A: Given: Only certain wavelengths emitted from an atom.

Q: Compare X-rays and ultraviolet (UV) rays.   Which has a longer wavelength? Which has a higher…

A: According to Planck's theroy E =hvwhere E = energyv = frequencyh = planck's constantagainv…

Q: Determine the element of lowest atomic number that contains an f electron in the ground state.…

A: Electronic configuration: Electronic configuration can be define as the arrangement of electrons…

Q: In a situation where an electron goes from the n = 1 orbital (ground state) to an n = 3 orbital,…

A:

Q: Which type of light has the shortest wavelength? Visible Radio Waves Ultraviolet Infrared O…

A: Electromagnetic waves are those waves which are formed by the perpendicular vibrations in electric…

Q: What electromagnetic radiations are considered to be dangerous with a lot of exposure and why?

A: Electromagnetic radiation are the radiations which travel in waves with both electric and magnetic…

Q: need this question answered in 20 minutes please and thank you. I will write a long and wonderful…

A: Wavelength is distance between one crest or trough to another crest or trough.It can be measured in…

Q: What is the lowest energy light blue,green,yellow or red

A: Order of the energy of lights

Q: What is the frequency of blue light that has a wavelength of 455 nm?

A: The wavelength is inversely proportional to the frequency of the wave as from the following…

Q: Gamma rays contain the least amount of energy out of all the waves. O True O False

A:

Q: A laser in a DVD player emits about 5.0 mJ per second. If this is a "red" light, how many photons…

A: Given: Energy emitted by photon = 5.0 mJ/sec = 5.0×10-3 Js-1 Wavelength of Red light is in between…

Q: The term used to describe electrons that jump out of their ground state after absorbing light energy…

A: When an atom absorbed energy electrons of lower energy state excited state of higher energy

Q: When a substance light, an electron undergoes a transition from the lowest-energy level to a…

A: the answer would be:

Q: Diagram A is on the left and Diagram B is on the right. Which of the following is true? A and B have…

A: The distance between the two adjacent crests and troughs is called Wavelength. The number of waves…

Q: In the photoelectric effect, shining photons of light on a metal ejects electrons under certain…

A: In photoelectric effect, ejection of electrons takes place under certain conditions.

Q: Question 3: A hydrogen atom in the ground state interacts with a photon with a wavelength of 3.650 x…

A: Energy of a energy of photon hx2 =heλ      e=speed of light and λ=wavelengthh=6.63×10-34 J Sc=3×108…

Q: Which wavelength of light has the highest frequency? a. 16 mm b. 4 nm c. 16 nm d. 4 mm

A:

Q: Lines associated with the atomic spectra represent: Nuclear energy emitted by atoms in the cores of…

A: IntroductionThe lines associated with the atomic spectra represent the energy absorbed or emitted by…

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.