Question Answers

Not considering the electronic spin, the degeneracy of the second excited state (n=3) of H-atom is 9, while the degeneracy of the second excited state of H^− is Not considering the electronic spin the degeneracy of the second excited state (n=3) of H-atom is 9 while the degeneracy of the second excited state of H^− [...]

P is the probability of finding the 1s electron of hydrogen atom in a spherical shell of infinitesimal thickness, dr, at a distance r from the nucleus. The volume of this shell is 4 πr^2 dr. The qualitative sketch of the dependence of P on r is at a distance r from the nucleus. The [...]

ASSERTION All photons possess the same amount of energy. REASON Energy of photon do not depend upon wavelength of light used. ASSERTION All photons possess the same amount of energy. REASON Energy of photon do not depend upon wavelength of light used. November 16, 2020 Category: AIIMS Last 24 Years Solved 1996 - 2019 Physics [...]

Assertion : A beam of electrons deflect more than a beam of α-particles in an electric field. Reason : Electrons possess negative charge while α particles possess positive charge. Assertion : A beam of electrons deflect more than a beam of α-particles in an electric field. Reason : Electrons possess negative charge while α particles [...]

Assertion : A spectral line will be observed for a 2px −2pY transition. Reason : The energy is released in the form of wave of light when electron drops from 2px to 2py ​orbital. Assertion : A spectral line will be observed for a 2px −2pY transition. Reason : The energy is released in the [...]

Assertion (A):In Lyman series of H-spectra, the maximum wavelength of lines is 121.56 nm. Reason (R): Wavelength is maximum if there is transition from the very next level. Assertion (A):In Lyman series of H-spectra the maximum wavelength of lines is 121.56 nm. Reason (R): Wavelength is maximum if there is transition from the very next [...]

Assertion (A) : Each electron in an atom has two spin quantum number. Reason (R ) : Spin quantum numbers are obtained by solving schrodinger wave equation. Assertion (A) : Each electron in an atom has two spin quantum number. Reason (R ) : Spin quantum numbers are obtained by solving schrodinger wave equation. November [...]

Assertion : The energy of an electron is largely determined by its principal quantum number. Reason : The principal quantum number n is a measure of the most probable distance of finding the electron around the nucleus. The de-Broglie wavelength of an electron in the ground state of the hydrogen atom is : November 16, [...]

Assertion (A) : In an atom, the velocity of electron in the higher orbits keeps on decreasing. Reason (R ) : Velocity of electron in inversely proportional to the radius of the orbit. > Assertion (A) : In an atom the velocity of electron in the higher orbits keeps on decreasing. Reason (R ) : [...]

The maximum number of electrons, present in an orbit that is represented by azimuthal quantum number (l) = 3, will be present in an orbit that is represented by azimuthal quantum number (l) = 3 The maximum number of electrons will be November 16, 2020 Category: AIIMS Last 24 Years Solved 1996 - 2019 Physics [...]