Atoms questions
233 published questions with worked solutions.
- The ratio of momentum of the photons of the 1st and 2nd line of Balmer series of Hydrogen atoms is α/β. The possible values of α...
- In hydrogen spectrum, the shortest wavelength in the Balmer series is . The shortest wavelength in the Bracket series is :
- The minimum wavelength of X-rays produced by an electron accelerated through a potential difference of V volts is proportional to...
- If Rydberg's constant is R, the longest wavelength of radiation in Paschen series will be 7R , where α = ____.
- Hydrogen atom is bombarded with electrons accelerated through a potential difference of V, which causes excitation of hydrogen...
- When a hydrogen atom going from n = 2 to n = 1 emits a photon, its recoil speed is x5 m/s. Where x = ________. (Use mass of...
- An electron revolving in nᵗʰ Bohr orbit has magnetic moment μₙ. If μₙ ∝ nˣ, the value of x is
- If the wavelength of the first member of Lyman series of hydrogen is λ. The wavelength of the second member will be
- The atomic hydrogen emits a line spectrum consisting of various series. Which series of hydrogen atomic spectra is lying in the...
- If an electron is moving in the n^ th orbit of the hydrogen atom, then its velocity (v_n) for the n^ th orbit is given as :
- An X-ray tube is operated at 1.24 million volt. The shortest wavelength of the produced photon will be :
- Energy levels A, B and C of a certain atom correspond to increasing values of energy i.e., E_ A <E_ B <E_ C . If _ 1 , _ 2 and _...
- The total energy of an electron in the first excited state of hyrogen is about - 3.4 eV. Its kinetic energy in this state is :
- The K_ X-ray of molybdenum has wavelength 0.071 nm. If the energy of a molybdenum atoms with a K electron knocked out is 27.5...
- X different wavelengths may be observed in the spectrum from a hydrogen sample if the atoms are exited to states with principal...
- The wavelength of the photon emitted by a hydrogen atom when an electron makes a transition from n = 2 to n = 1 state is :
- The wavelength of an X-ray beam is 10Å. The mass of a fictitious particle having the same energy as that of the X-ray photons is...
- A particular hydrogen like ion emits radiation of frequency 2.92 × 10^ 15 Hz when it makes transition from n = 3 to n = 1. The...
- The recoil speed of a hydrogen atom after it emits a photon in going from n = 5 state to n = 1 state is :
- Hydrogen atom from excited state comes to the ground state by emitting a photon of wavelength . The value of principal quantum...
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