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Atomic StructureJEE Main 2026, 6 Apr Evening shiftThe Bohr radius of a hydrogen like species is 70.53 pm. The species and the stationary state (n) are respectively (Given: Hydrogen atom Bohr radius is 52.9 pm)
Atoms and NucleiJEE Main 2025, 22 Jan Evening shift…dicular to a uniform magnetic field B moves in a circle. If Bohr's quantization is applicable, then the radius of the electronic orbit in the first excited state is:
Atomic StructureJEE Main 2025, 29 Jan Morning shiftIf a₀ is denoted as the Bohr radius of hydrogen atom, then what is the de-Broglie wavelength (λ) of the electron present in the second orbit of hydrogen atom ? [ n: any integer]
Atoms and NucleiJEE Main 2025, 2 Apr Evening shiftAssuming the validity of Bohr's atomic model for hydrogen like ions the radius of Li⁺⁺ ion in its ground state is given by 1/Xa₀, where X = _ _ _. (Where a₀ is the first Bohr's radius.)
Atoms and NucleiJEE Main 2025, 4 Apr Morning shiftConsidering the Bohr model of hydrogen like atoms, the ratio of the radius of 5^(th) orbit of the electron in Li²⁺ and He⁺ is
Atomic StructureJEE Main 2025, 4 Apr Morning shift… occupying the 1s orbital in a hydrogen atom is incorrect? (Bohr's radius is represented by a₀)
Atomic StructureJEE Main 2017, Session Shift 1The radius of the second Bohr orbit for hydrogen atom is: (Planck’s Const. h = 6.6262 × 10⁻³⁴ Js; mass of electron = 9.1091 × 10⁻³¹ kg; charge of electron (e) = 1.60210 × 10⁻¹⁹ C; permittivity of vacuum (ε ₀) = 8.854185 …
Atomic StructureJEE Main 2020, 8 Jan Evening shiftThe radius of the second Bohr orbit, in terms of the Bohr radius, a₀, in Li²⁺ is:
Atomic StructureJEE Main 2022, 26 Jun Morning shiftIf the radius of the 3^(r)d Bohr's orbit of hydrogen atom is r₃ and the radius of 4^(t)h Bohr's orbit is r₄. Then:
Atomic StructureJEE Main 2019, 12 Jan Evening shiftIf the de Broglie wavelength of the electron in n^(t)h Bohr orbit in a hydrogenic atom is equal to 1.5 π a₀ (a₀ is Bohr radius), then the value of n/z is -
Atomic StructureJEE Main 2019, 9 Apr Evening shift…pying the 1s orbital in a hydrogen atom is incorrect ? (The Bohr radius is represented by a₀)
Atoms and NucleiJEE Main 2008, Annual Paper 1…s the distance of the electron from the origin. By applying Bohr model to this system, the radius of the n^(th) orbital of the electron is found to be 'r n ' and the kinetic energy of the electron to be 'T n '. Then whic…
Atoms and NucleiJEE Main 2019, 11 Jan Morning shift… is excited by absorbing a photon of wavelength 980 A°. The radius of the atom in the excited state, in terms of Bohr radius a₀ will be: (hc = 12500 eV A°)
Atoms and NucleiJEE Main 2023, 31 Jan Evening shiftThe radius of electron's second stationary orbit in Bohr's atom is R. The radius of 3rd orbit will be
Atoms and NucleiJEE Main 2023, 6 Apr Evening shift…and r is the distance of the particle from origin. Assuming Bohr's quantization of momentum and circular orbit, the radius of n^(th) orbit will be proportional to,
Atoms and NucleiJEE Main 2024, 27 Jan Morning shiftThe radius of third stationary orbit of electron for Bohr's atom is R. The radius of fourth stationary orbit will be:
Atoms and NucleiJEE Main 2021, 27 Jul Morning shiftIn Bohr's atomic model, the electron is assumed to revolve in a circular orbit of radius 0.5 A^(o). If the speed of electron is 2.2 × 16⁶ m/s, then the current associated with the electron will be _ _ _ _ _ _ _ × 10⁻² mA…
Atoms and NucleiJEE Main 2023, 13 Apr Morning shiftThe radius of 2^(nd) orbit of He⁺ of Bohr's model is r₁ and that of fourth orbit of Be³⁺ is represented as r₂. Now the ratio (r₂)/(r₁) is x: 1. The value of x is _ _ _ _ _ _.
Atomic StructureJEE Main 2021, 27 Aug Morning shiftThe kinetic energy of an electron in the second Bohr orbit of a hydrogen atom is equal to (h²)/(xma₀²). The value of 10x is _ _ _ _ _ _. (a₀ is radius of Bohr's orbit) (Nearest integer) [Given: π = 3.14]
Atomic StructureJEE Main 2024, 4 Apr Morning shift…th of an electron in the 4^(th) orbit is _ _ _ _ π a₀. (a₀= Bohr's radius)
Atomic StructureJEE Main 2023, 29 Jan Evening shiftAssume that the radius of the first Bohr orbit of hydrogen atom is 0.6 A^(o). The radius of the third Bohr orbit of He ⁺ is _ _ _ _ _ picometer. (Nearest Integer)
Atomic StructureJEE Main 2022, 29 Jul Morning shift…n in an one dimensional region of length 2 a o (Where a o = Bohr radius 52.9 pm) is _ _ _ _ k m s⁻¹. (Given: Mass of electron = 9.1 × 10⁻³1 kg, Planck's constant h = 6.63 × 10⁻³4 Js)