Chemistry

Chemistry, 26.09.2019 16:30, devinwilson369

How is an emission spectrum of an element generated?
a when an electron in an atom is excited to a higher energy state.
b. when an electron in an atom is in the excited state.
c. when an electron in an atom returns from an excited state to a lower energy state.
d. when an electron in an atom is in the ground state.

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Chemistry, 29.06.2019 21:00, ronaldhernandez598

Light is released when an excited electron moves from higher energy level back down to its lower, more stable energy level. the resulting spectrum is a(n) spectrum. a) emission b) absorption c) excitation d) higher energy

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Chemistry, 16.09.2019 16:10, mlandon922

Give the electron configuration for sodium (na, element number 11). in what atomic orbital does the electron with the most energy reside? the electron configuration you just wrote for the sodium atom describes the element in its lowest energy or ground state. each of the atomic orbitals for an element is separated from the next by a discrete or quantized amount of energy, with the energies separating successively higher energy orbitals being different but also discrete. only when the energy of radiation interacting with an atom exactly matches the gap between two energy levels of the atom will an absorption (or emission) event occur. not surprisingly, these energy differences are unique to an individual element, and thus can be used to identify that element. atomic spectroscopy is based on quantized changes in atomic energy that follow the absorption (or emission) of light. in absorption, the energy of the atom increases as an electron is promoted from an orbital of lower energy (the ground state) to one of higher energy (the excited state). in this process, light of the appropriate frequency, , (or wavelength, ) is absorbed according to eq. 1, where e represents the difference in energy (in joules) between the excited and ground states, h is planck's constant (h = 6.626 × 10-34 j s), and c is the speed of light in a vacuum (c = 2.998 × 108 m/s).

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Chemistry, 06.10.2019 23:00, itujggkmjf8067

How is an emission spectrum of an element generated? -when an electron in an atom is excited to a higher energy state. -when an electron in an atom is in the excited state. -when an electron in an atom returns from an excited state to a lower energy state. -when an electron in an atom is in the ground state.

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Physics, 08.10.2019 06:00, yaxcalandreya

Select all the following statements that are true concerning absorption and emission spectra. group of answer choices an emission spectrum is created when a sample of excited gas emits particular frequencies of light. an absorption spectrum is created when a sample of excited gas emits particular frequencies of light. for a particular element, its absorption and emission spectra show the same discrete line patterns. if the energy of the atom is increasing, then there must be an emission of light energy. conversely, if the energy of the atom is decreasing, then there must be an absorption of light energy.

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How is an emission spectrum of an element generated?
a when an electron in an atom is excited...

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