When an electron jumps from higher orbit to lower orbit in an atom the energy is …………….
A) absorbed
B) emitted
C) not changed
D) depends on atom
1 Answers
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By giving energy to a hydrogen atom in energy state n=1. If the potential energy of the atom in n=1 state be `-13.6 eV`, calculate (a) potential enreg
Correct Answer - `-0.85 eV, 12.75 eV, 971 Å`
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The energy of K-electron in tungsten is -20.0 keV and of an L-electron is -2.0 ke V. Find the wavelength of X-rays emitted when an electron jumps from
Correct Answer - 0.6875 Å
2 Answers 1 views
A photon of energy 12.09 eV is absorbed by an electron in ground state of a hydrogen atoms. What will be the energy level of electron ? The energy of
Correct Answer - n=3
2 Answers 3 views
Hereditary is a scheme, which arranges castes in terms of higher and lower status.
Hierarchy is a scheme, which arranges castes in terms of higher and lower status.
2 Answers 1 views
Calculate the frequency of revolution of an electron in the first orbit of an aluminum atom. Given that mass of electron `=9x10^(-31) kg, e= 1.6 xx10^
Correct Answer - `3.25xx10^(18) rev.//sec`
2 Answers 1 views
Calculate the energy of hydrogen atom in the ground state given that the after Bohr orbit og hydrogen is `5xx10^(-11)m` and electronic charge is `1.6x
Correct Answer - `-2.304xx10^(-18) J`
2 Answers 1 views
An electron in an excited hydrogen atom acquired an energy of 12.1 eV. To what energy level did it jump? How many spectral lines may be emitted in the
Correct Answer - `n=3;` 1025 Å, 6563 Å; 1215 Å
2 Answers 1 views
Higher energy state of an electron is known as ………..
B) excited state
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The energy required to remove an electron from the outermost orbit or shell of a neutral gaseous atom is
B) ionization energy
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The energy of electron in the nth Bohr orbit of H-atom is …………
Option : (C) \(-\frac{2.18\times 10^{-18}}{n^2}J\)
2 Answers 1 views